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silver</title> <meta name="description" content="Search results for: dendritic silver"> <meta name="keywords" content="dendritic silver"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="dendritic silver"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 476</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: dendritic silver</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">476</span> Preparation of 1D Nano-Polyaniline/Dendritic Silver Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wen-Bin%20Liau">Wen-Bin Liau</a>, <a href="https://publications.waset.org/abstracts/search?q=Wan-Ting%20Wang"> Wan-Ting Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiang-Jen%20Hsiao"> Chiang-Jen Hsiao</a>, <a href="https://publications.waset.org/abstracts/search?q=Sheng-Mao%20Tseng"> Sheng-Mao Tseng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, an interesting and easy method to prepare one-dimensional nanostructured polyaniline/dendritic silver composites is reported. It is well known that the morphology of metal particle is a very important factor to influence the properties of polymer-metal composites. Usually, the dendritic silver is prepared by kinetic control in reduction reaction. It is not a thermodynamically stable structure. It is the goal to reduce silver ion to dendritic silver by polyaniline polymer via kinetic control and form one-dimensional nanostructured polyaniline/dendritic silver composites. The preparation is a two steps sequential reaction. First step, the polyaniline networks composed of nano fibrillar polyaniline are synthesized from aniline monomers aqueous with ammonium persulfate as the initiator at room temperature. In second step, the silver nitrate is added into polyaniline networks dispersed in deionized water. The dendritic silver is formed via reduction by polyaniline networks under the kinetic control. The formation of polyaniline is discussed via transmission electron microscopy (TEM). Nanosheets, nanotubes, nanospheres, nanosticks, and networks are observed via TEM. Then, the mechanism of formation of one-dimensional nanostructured polyaniline/dendritic silver composites is discussed. The formation of dendritic silver is observed by TEM and X-ray diffraction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=1D%20nanostructured%20polyaniline" title="1D nanostructured polyaniline">1D nanostructured polyaniline</a>, <a href="https://publications.waset.org/abstracts/search?q=dendritic%20silver" title=" dendritic silver"> dendritic silver</a>, <a href="https://publications.waset.org/abstracts/search?q=synthesis" title=" synthesis"> synthesis</a> </p> <a href="https://publications.waset.org/abstracts/24911/preparation-of-1d-nano-polyanilinedendritic-silver-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24911.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">500</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">475</span> Fabrication of Silver Nanowire Based Low Temperature Conductive Ink</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Merve%20Nur%20G%C3%BCven%20Bi%C3%A7er">Merve Nur Güven Biçer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conductive inks are used extensively in electronic devices like sensors, batteries, photovoltaic devices, antennae, and organic light-emitting diodes. These inks are typically made from silver. Wearable technology is another industry that requires inks to be flexible. The aim of this study is the fabrication of low-temperature silver paste by synthesis long silver nanowires. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20ink" title="silver ink">silver ink</a>, <a href="https://publications.waset.org/abstracts/search?q=conductive%20ink" title=" conductive ink"> conductive ink</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperature%20conductive%20ink" title=" low temperature conductive ink"> low temperature conductive ink</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanowire" title=" silver nanowire"> silver nanowire</a> </p> <a href="https://publications.waset.org/abstracts/143795/fabrication-of-silver-nanowire-based-low-temperature-conductive-ink" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143795.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">188</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">474</span> Preparation and Characterization of Organic Silver Precursors for Conductive Ink</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wendong%20Yang">Wendong Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Changhai%20Wang"> Changhai Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Valeria%20Arrighi"> Valeria Arrighi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Low ink sintering temperature is desired for flexible electronics, as it would widen the application of the ink on temperature-sensitive substrates where the selection of silver precursor is very critical. In this paper, four types of organic silver precursors, silver carbonate, silver oxalate, silver tartrate and silver itaconate, were synthesized using an ion exchange method, firstly. Various characterization methods were employed to investigate their physical phase, chemical composition, morphologies and thermal decomposition behavior. It was found that silver oxalate had the ideal thermal property and showed the lowest decomposition temperature. An ink was then formulated by complexing the as-prepared silver oxalate with ethylenediamine in organic solvents. Results show that a favorable conductive film with a uniform surface structure consisting of silver nanoparticles and few voids could be produced from the ink at a sintering temperature of 150 °C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conductive%20ink" title="conductive ink">conductive ink</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20property" title=" electrical property"> electrical property</a>, <a href="https://publications.waset.org/abstracts/search?q=film" title=" film"> film</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20silver" title=" organic silver"> organic silver</a> </p> <a href="https://publications.waset.org/abstracts/86164/preparation-and-characterization-of-organic-silver-precursors-for-conductive-ink" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86164.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">331</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">473</span> Synthesis of Polyvinyl Alcohol Encapsulated Ag Nanoparticle Film by Microwave Irradiation for Reduction of P-Nitrophenol</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Supriya">Supriya</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20K.%20Basu"> J. K. Basu</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Sengupta"> S. Sengupta</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles have caught a lot of attention because of its unique physical and chemical properties. Silver nanoparticles embedded in polyvinyl alcohol (PVA/Ag) free-standing film have been prepared by microwave irradiation in few minutes. PVA performed as a reducing agent, stabilizing agents as well as support for silver nanoparticles. UV-Vis spectrometry, scanning transmission electron (SEM) and transmission electron microscopy (TEM) techniques affirmed the reduction of silver ion to silver nanoparticles in the polymer matrix. Effect of irradiation time, the concentration of PVA and concentration of silver precursor on the synthesis of silver nanoparticle has been studied. Particles size of silver nanoparticles decreases with increase in irradiation time. Concentration of silver nanoparticles increases with increase in concentration of silver precursor. Good dispersion of silver nanoparticles in the film has been confirmed by TEM analysis. Particle size of silver nanoparticle has been found to be in the range of 2-10nm. Catalytic property of prepared silver nanoparticles as a heterogeneous catalyst has been studied in the reduction of p-Nitrophenol (a water pollutant) with >98% conversion. From the experimental results, it can be concluded that PVA encapsulated Ag nanoparticles film as a catalyst shows better efficiency and reusability in the reduction of p-Nitrophenol. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biopolymer" title="biopolymer">biopolymer</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave%20irradiation" title=" microwave irradiation"> microwave irradiation</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20pollutant" title=" water pollutant"> water pollutant</a> </p> <a href="https://publications.waset.org/abstracts/91412/synthesis-of-polyvinyl-alcohol-encapsulated-ag-nanoparticle-film-by-microwave-irradiation-for-reduction-of-p-nitrophenol" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91412.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">289</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">472</span> Synthesis and Characterization of Silver Nanoparticles Using Daucus carota Extract </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Bindhu">M. R. Bindhu</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Umadevi"> M. Umadevi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles have been synthesized by Daucus carota extract as reducing agent was reported here. The involvement of phytochemicals in the Daucus carota extract in the reduction and stabilization of silver nanoparticles has been established using XRD and UV-vis studies. The UV-vis spectrum of the prepared silver nanoparticles showed surface plasmon absorbance peak at 450 nm. The obtained silver nanoparticles were almost spherical in shape with the average size of 15 nm. Crystalline nature of the nanoparticles was evident from bright spots in the SAED pattern and peaks in the XRD pattern. This new, simple and natural method for biosynthesis of silver nanoparticles offers a valuable contribution in the area of green synthesis and nanotechnology avoiding the presence of hazardous and toxic solvents and waste. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daucus%20carota" title="Daucus carota">Daucus carota</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20plasmon%20resonance" title=" surface plasmon resonance"> surface plasmon resonance</a> </p> <a href="https://publications.waset.org/abstracts/7588/synthesis-and-characterization-of-silver-nanoparticles-using-daucus-carota-extract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7588.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">468</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">471</span> The Green Synthesis AgNPs from Basil Leaf Extract</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wanida%20Wonsawat">Wanida Wonsawat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bioreduction of silver nanoparticles (AgNPs) from silver ions (Ag+) using water extract of Thai basil leaf was successfully carried out. The basil leaf extract provided a reducing agent and stabilizing agent for a synthesis of metal nanoparticles. Silver nanoparticles received from cut and uncut basil leaf was compared. The resulting silver nanoparticles are characterized by UV-Vis spectroscopy. The maximum intensities of silver nanoparticle from cut and uncut basil leaf were 410 and 420, respectively. The techniques involved are simple, eco-friendly and rapid. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=basil%20leaves" title="basil leaves">basil leaves</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=plant%20extract" title=" plant extract"> plant extract</a> </p> <a href="https://publications.waset.org/abstracts/9654/the-green-synthesis-agnps-from-basil-leaf-extract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9654.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">588</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">470</span> Influence of Hydrogen Ion Concentration on the Production of Bio-Synthesized Nano-Silver </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.F.%20Elkady">M.F. Elkady</a>, <a href="https://publications.waset.org/abstracts/search?q=Sahar%20Zaki"> Sahar Zaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Desouky%20Abd-El-Haleem"> Desouky Abd-El-Haleem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles (AgNPs) are already widely prepared using different technologies. However, there are limited data on the effects of hydrogen ion concentration on nano-silver production. In this investigation, the impact of the pH reaction medium toward the particle size, agglomeration and the yield of the produced bio-synthesized silver were established. Quasi-spherical silver nanoparticles were synthesized through the biosynthesis green production process using the Egyptian E. coli bacterial strain 23N at different pH values. The formation of AgNPs has been confirmed with ultraviolet–visible spectra through identification of their characteristic peak at 410 nm. The quantitative production yield and the orientation planes of the produced nano-silver were examined using X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Quantitative analyses indicated that the silver production yield was promoted at elevated pH regarded to increase the reduction rate of silver precursor through both chemical and biological processes. As a result, number of the nucleus and thus the size of the silver nanoparticles were tunable through changing pH of the reaction system. Accordingly, the morphological structure and size of the produced silver and its aggregates were determined using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. It was considered that the increment in pH value of the reaction media progress the aggregation of silver clusters. However, the presence of stain 23N biomass decreases the possibility of silver aggregation at the pH 7. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title="silver nanoparticles">silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=biosynthesis" title=" biosynthesis"> biosynthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=reaction%20media%20pH" title=" reaction media pH"> reaction media pH</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-silver%20characterization" title=" nano-silver characterization"> nano-silver characterization</a> </p> <a href="https://publications.waset.org/abstracts/8263/influence-of-hydrogen-ion-concentration-on-the-production-of-bio-synthesized-nano-silver" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8263.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">371</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">469</span> Rapid Green Synthesis and Characterization of Silver Nanoparticles Using Eclipta prostrata Leaf Extract</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Siva%20Prasad%20Peddi">Siva Prasad Peddi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles were successfully synthesized from silver nitrate through a rapid green synthesis method using Eclipta prostrata leaf extract as a reducing cum stabilizing agent. The experimental procedure was readily conducted at room temperature and pressure, and could be easily scaled up. The silver nanoparticles thus obtained were characterized using UV-Visible Spectroscopy (UV-VIS) which yielded an absorption peak at 416 nm. The biomolecules responsible for capping of the bio-reduced silver nanoparticles synthesized using plant extract were successfully identified through FTIR analysis. It was evinced through Scanning Electron Microscope (SEM), and X-ray diffraction (XRD) analysis that the silver nanoparticles were crystalline in nature and spherical in shape. The average size of the particles obtained using Scherrer’s formula was 27.4 nm. The adopted technique for silver nanoparticle synthesis is suitable for large-scale production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title="silver nanoparticles">silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=characterization" title=" characterization"> characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=Eclipta%20prostrata" title=" Eclipta prostrata"> Eclipta prostrata</a> </p> <a href="https://publications.waset.org/abstracts/20089/rapid-green-synthesis-and-characterization-of-silver-nanoparticles-using-eclipta-prostrata-leaf-extract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20089.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">467</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">468</span> Antifungal Activity of Silver Colloidal Nanoparticles against Phytopathogenic Fungus (Phomopsis sp.) in Soybean Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20E.%20Mendes">J. E. Mendes</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Abrunhosa"> L. Abrunhosa</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20A.%20Teixeira"> J. A. Teixeira</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20R.%20de%20Camargo"> E. R. de Camargo</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20P.%20de%20Souza"> C. P. de Souza</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20D.%20C.%20Pessoa"> J. D. C. Pessoa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among the many promising nanomaterials with antifungal properties, metal nanoparticles (silver nanoparticles) stand out due to their high chemical activity. Therefore, the aim of this study was to evaluate the effect of silver nanoparticles (AgNPs) against Phomopsis sp. AgNPs were synthesized by silver nitrate reduction with sodium citrate and stabilized with ammonia. The synthesized AgNPs have further been characterized by UV/Visible spectroscopy, Biophysical techniques like Dynamic light scattering (DLS) and Scanning Electron Microscopy (SEM). The average diameter of the prepared silver colloidal nanoparticles was about 52 nm. Absolute inhibitions (100%) were observed on treated with a 270 and 540 µg ml-1 concentration of AgNPs. The results from the study of the AgNPs antifungal effect are significant and suggest that the synthesized silver nanoparticles may have an advantage compared with conventional fungicides. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antifungal%20activity" title="antifungal activity">antifungal activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Phomopsis%20sp." title=" Phomopsis sp."> Phomopsis sp.</a>, <a href="https://publications.waset.org/abstracts/search?q=seeds" title=" seeds"> seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=soybean" title=" soybean"> soybean</a> </p> <a href="https://publications.waset.org/abstracts/13204/antifungal-activity-of-silver-colloidal-nanoparticles-against-phytopathogenic-fungus-phomopsis-sp-in-soybean-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13204.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">459</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">467</span> Investigation of Electrical, Thermal and Structural Properties on Polyacrylonitrile Nano-Fiber</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Demirsoy">N. Demirsoy</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20U%C3%A7ar"> N. Uçar</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20%C3%96nen"> A. Önen</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20K%C4%B1z%C4%B1lda%C4%9F"> N. Kızıldağ</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96.%20F.%20Vurur"> Ö. F. Vurur</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Eren"> O. Eren</a>, <a href="https://publications.waset.org/abstracts/search?q=%C4%B0.%20Karacan"> İ. Karacan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polymer composite nano-fibers including (1, 3 wt %) silver nano-particles have been produced by electrospinning method. Polyacrylonitrile/N,N-dimethylformamide (PAN/DMF) solution has been prepared and the amount of silver nitrate has been adjusted to PAN weight. Silver nano-particles were obtained from reduction of silver ions into silver nano-particles by chemical reduction by hydrazine hydroxide (N2H5OH). The different amount of silver salt was loaded into polymer matrix to obtain polyacrylonitrile composite nano-fiber containing silver nano-particles. The effect of the amount of silver nano-particles on the properties of composite nano-fiber web was investigated. Electrical conductivity, mechanical properties, thermal properties were examined by Microtest LCR Meter 6370 (0.01 mΩ-100 MΩ), tensile tester, differential scanning calorimeter DSC (Q10) and SEM, respectively. Also, antimicrobial efficiency test (ASTM E2149-10) was done against Staphylococcus aureus bacteria. It has been seen that breaking strength, conductivity, antimicrobial effect, enthalpy during cyclization increase by use of silver nano-particles while the diameter of nano-fiber decreases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20polyacrylonitrile%20nanofiber" title="composite polyacrylonitrile nanofiber">composite polyacrylonitrile nanofiber</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20conductivity" title=" electrical conductivity"> electrical conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=electrospinning" title=" electrospinning"> electrospinning</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20properties" title=" thermal properties"> thermal properties</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/7504/investigation-of-electrical-thermal-and-structural-properties-on-polyacrylonitrile-nano-fiber" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7504.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">418</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">466</span> Nano Gold and Silver for Control of Mosquitoes Manipulating Nanogeometries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soam%20Prakash">Soam Prakash</a>, <a href="https://publications.waset.org/abstracts/search?q=Namita%20Soni"> Namita Soni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The synthesis of metallic nanoparticles is an active area of academic and more significantly, applied research in nanotechnology. Currently, nanoparticle research is an area of intense scientific interest. Silver (Ag) and Gold (Au) nanoparticles (NPs) have been the focus of fungi and plant based syntheses. Silver and gold nanoparticles are nanoparticles of silver and gold. These particles are of between 1 nm and 100 nm in size. Silver and gold have been use in the wide variety of potential applications in biomedical, optical, electronic field, treatment of burns, wounds, and several bacterial infections. There is a crucial need to produce new insecticides due to resistance and high-cost of organic insecticides which are more environmentally-friendly, safe, and target-specific. Synthesizing nanoparticles using plants and microorganisms can eliminate this problem by making the nanoparticles more biocompatible. Here we reviewed the mosquitocidal and antimicrobials activity of silver and gold nanoparticles using fungi, plants as well as bacteria. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano%20gold" title="nano gold">nano gold</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20silver" title=" nano silver"> nano silver</a>, <a href="https://publications.waset.org/abstracts/search?q=Malaria" title=" Malaria"> Malaria</a>, <a href="https://publications.waset.org/abstracts/search?q=Chikengunia" title=" Chikengunia"> Chikengunia</a>, <a href="https://publications.waset.org/abstracts/search?q=dengue%20control" title=" dengue control"> dengue control</a> </p> <a href="https://publications.waset.org/abstracts/28446/nano-gold-and-silver-for-control-of-mosquitoes-manipulating-nanogeometries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28446.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">436</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">465</span> Role of NaCl and Temperature in Glycerol Mediated Rapid Growth of Silver Nanostructures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=L.%20R.%20Shobin">L. R. Shobin</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Manivannan"> S. Manivannan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One dimensional silver nanowires and nanoparticles gained more interest in developing transparent conducting films, catalysis, biological and chemical sensors. Silver nanostructures can be synthesized by varying reaction conditions such as the precursor concentration, molar ratio of the surfactant, injection speed of silver ions, etc. in the polyol process. However, the reaction proceeds for greater than 2 hours for the formation of silver nanowires. The introduction of etchant in the medium promotes the growth of silver nanowires from silver nanoparticles along the [100] direction. Rapid growth of silver nanowires is accomplished using the Cl- ions from NaCl and polyvinyl pyrrolidone (PVP) as surfactant. The role of Cl- ion was investigated in the growth of the nanostructured silver. Silver nanoparticles (<100 nm) were harvested from glycerol medium in the absence of Cl- ions. Trace amount of Cl- ions (2.5 mM -NaCl) produced the edge joined nanowires of length upto 2 μm and width ranging from 40 to 65 nm. Formation and rapid growth (within 25 minutes) of long, uniform silver nanowires (upto 5 μm) with good yield were realized in the presence of 5 mM NaCl at 200ºC. The growth of nanostructures was monitored by UV-vis-NIR spectroscopy. Scanning and transmission electron microscopes reveal the morphology of the silver nano harvests. The role of temperature in the reduction of silver ions, growth mechanism for nanoparticles, edge joined and straight nanowires will be discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanowires" title="silver nanowires">silver nanowires</a>, <a href="https://publications.waset.org/abstracts/search?q=glycerol%20mediated%20polyol%20process" title=" glycerol mediated polyol process"> glycerol mediated polyol process</a>, <a href="https://publications.waset.org/abstracts/search?q=scanning%20electron%20microscopy" title=" scanning electron microscopy"> scanning electron microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=UV-Vis-%20NIR%20spectroscopy" title=" UV-Vis- NIR spectroscopy"> UV-Vis- NIR spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=transmission%20electron%20microscopy" title=" transmission electron microscopy"> transmission electron microscopy</a> </p> <a href="https://publications.waset.org/abstracts/11035/role-of-nacl-and-temperature-in-glycerol-mediated-rapid-growth-of-silver-nanostructures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11035.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">303</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">464</span> Electrodeposited Silver Nanostructures: A Non-Enzymatic Sensor for Hydrogen Peroxide </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mandana%20Amiri">Mandana Amiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Sima%20Nouhi"> Sima Nouhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yashar%20Azizan-Kalandaragh"> Yashar Azizan-Kalandaragh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanostructures have been successfully fabricated by using electrodeposition method onto indium-tin-oxide (ITO) substrate. Scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and ultraviolet-visible spectroscopy (UV-Vis) techniques were employed for characterization of silver nanostructures. The results show nanostructures with different morphology and electrochemical properties can be obtained by various the deposition potentials and times. Electrochemical behavior of the nanostructures has been studied by using cyclic voltammetry. Silver nanostructures exhibits good electrocatalytic activity towards the reduction of H<sub>2</sub>O<sub>2</sub>. The presented electrode can be employed as sensing element for hydrogen peroxide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrochemical%20sensor" title="electrochemical sensor">electrochemical sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=electrodeposition" title=" electrodeposition"> electrodeposition</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20peroxide" title=" hydrogen peroxide"> hydrogen peroxide</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanostructures" title=" silver nanostructures "> silver nanostructures </a> </p> <a href="https://publications.waset.org/abstracts/21938/electrodeposited-silver-nanostructures-a-non-enzymatic-sensor-for-hydrogen-peroxide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21938.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">512</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">463</span> Synthesis of Silver Nanoparticles by Different Types of Plants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khamael%20Abualnaja">Khamael Abualnaja</a>, <a href="https://publications.waset.org/abstracts/search?q=Hala%20M.%20Abo-Dief"> Hala M. Abo-Dief</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles (AgNPs) are the subject of important recent interest, present in a large range of applications such as electronics, catalysis, chemistry, energy, and medicine. Metallic nanoparticles are traditionally synthesized by wet chemical techniques, where the chemicals used are quite often toxic and flammable. In this work, we describe an effective and environmental-friendly technique of green synthesis of silver nanoparticles. Silver nanoparticles (AgNPs) synthesized using silver nitrate solution and the extract of mint, basil, orange peel and Tangerines peel which used as reducing agents. Silver Nanoparticles were characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and UV–Vis absorption spectroscopy. SEM analysis showed the average particle size of mint, basil, orange peel, Tangerines peel are 30, 20, 12, 10 nm respectively. This is for the first time that any plant extract was used for the synthesis of nanoparticles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title="silver nanoparticles">silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=scanning%20electron%20microscopy" title=" scanning electron microscopy"> scanning electron microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=plants" title=" plants"> plants</a> </p> <a href="https://publications.waset.org/abstracts/72608/synthesis-of-silver-nanoparticles-by-different-types-of-plants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72608.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">258</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">462</span> In-Situ Reactive Growth of Silver Nanoparticles on Cotton Textile for Antiviral and Electromagnetic Shielding Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Mohammadi%20Mofarah">Hamed Mohammadi Mofarah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mutalifu%20Abulikemu"> Mutalifu Abulikemu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghassan%20E.%20Jabbour"> Ghassan E. Jabbour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Personal protective equipment (PPE) is finding increasing interest in incorporating silver nanoparticles (NPs) for various applications including microbial disinfection and shielding against electromagnetic waves. In this venue, we present an in situ reactive coating approach where silver nanoparticles are self-assembled on the surface of cotton yarn. The impacts of a variety of experimental parameters on the average size of the synthesized silver NPs were investigated. These include vacuum conditions, the concentration of the silver salt solution and reducer, temperature, and curing time. Silver NPs with an average size ranging from 10 to 50 nanometers were self-assembled as a result of careful regulation of such reaction conditions. The disinfection efficacy against the COVID surrogate virus of the functional textile reached a rate of 99.99%. On the other hand, the silver NPs decorated textile demonstrated an electromagnetic shielding ranging from 31 dB to 45 dB were achieved for the frequency range 8.2-12.4 GHz. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antiviral" title="antiviral">antiviral</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID" title=" COVID"> COVID</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20shielding" title=" electromagnetic shielding"> electromagnetic shielding</a>, <a href="https://publications.waset.org/abstracts/search?q=in-situ%20reactive%20coating" title=" in-situ reactive coating"> in-situ reactive coating</a>, <a href="https://publications.waset.org/abstracts/search?q=SARS%20CoV%202" title=" SARS CoV 2"> SARS CoV 2</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20textile" title=" smart textile"> smart textile</a> </p> <a href="https://publications.waset.org/abstracts/165650/in-situ-reactive-growth-of-silver-nanoparticles-on-cotton-textile-for-antiviral-and-electromagnetic-shielding-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165650.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">99</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">461</span> Biosynthesis of Silver-Phosphate Nanoparticles Using the Extracellular Polymeric Substance of Sporosarcina pasteurii</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammadhosein%20Rahimi">Mohammadhosein Rahimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Raouf%20Hosseini"> Mohammad Raouf Hosseini</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehran%20Bakhshi"> Mehran Bakhshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Alireza%20Baghbanan"> Alireza Baghbanan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver ions (Ag<sup>+</sup>) and their compounds are consequentially toxic to microorganisms, showing biocidal effects on many species of bacteria. Silver-phosphate (or silver orthophosphate) is one of these compounds, which is famous for its antimicrobial effect and catalysis application. In the present study, a green method was presented to synthesis silver-phosphate nanoparticles using <em>Sporosarcina pasteurii</em>. The composition of the biosynthesized nanoparticles was identified as Ag<sub>3</sub>PO<sub>4</sub> using X-ray Diffraction (XRD) and Energy Dispersive Spectroscopy (EDS). Also, Fourier Transform Infrared (FTIR) spectroscopy showed that Ag<sub>3</sub>PO<sub>4</sub> nanoparticles was synthesized in the presence of biosurfactants, enzymes, and proteins. In addition, UV-Vis adsorption of the produced colloidal suspension approved the results of XRD and FTIR analyses. Finally, Transmission Electron Microscope (TEM) images indicated that the size of the nanoparticles was about 20 nm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bacteria" title="bacteria">bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=biosynthesis" title=" biosynthesis"> biosynthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=silver-phosphate" title=" silver-phosphate"> silver-phosphate</a>, <a href="https://publications.waset.org/abstracts/search?q=Sporosarcina%20pasteurii" title=" Sporosarcina pasteurii"> Sporosarcina pasteurii</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticle" title=" nanoparticle"> nanoparticle</a> </p> <a href="https://publications.waset.org/abstracts/57439/biosynthesis-of-silver-phosphate-nanoparticles-using-the-extracellular-polymeric-substance-of-sporosarcina-pasteurii" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57439.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">449</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">460</span> Synthesis of Silver Powders Destined for Conductive Paste Metallization of Solar Cells Using Butyl-Carbitol and Butyl-Carbitol Acetate Chemical Reduction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Moudir">N. Moudir</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Moulai-Mostefa"> N. Moulai-Mostefa</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Boukennous"> Y. Boukennous</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Bozetine"> I. Bozetine</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Kamel"> N. Kamel</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Moudir"> D. Moudir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> the study focuses on a novel process of silver powders synthesis for the preparation of conductive pastes used for solar cells metalization. Butyl-Carbitol and butyl-carbitol Acetate have been used as solvents and reducing agents of silver nitrate (AgNO3) as precursor to get silver powders. XRD characterization revealed silver powders with a cubic crystal system. SEM micro graphs showed spherical morphology of the particles. Laser granulometer gives similar particles distribution for the two agents. Using same glass frit and organic vehicle for comparative purposes, two conductive pastes were prepared with the synthesized silver powders for the front-side metalization of multi-crystalline cells. The pastes provided acceptable fill factor of 59.5 % and 60.8 % respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chemical%20reduction" title="chemical reduction">chemical reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=conductive%20paste" title=" conductive paste"> conductive paste</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nitrate" title=" silver nitrate"> silver nitrate</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title=" solar cell"> solar cell</a> </p> <a href="https://publications.waset.org/abstracts/33115/synthesis-of-silver-powders-destined-for-conductive-paste-metallization-of-solar-cells-using-butyl-carbitol-and-butyl-carbitol-acetate-chemical-reduction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33115.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">304</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">459</span> Interaction Evaluation of Silver Ion and Silver Nanoparticles with Dithizone Complexes Using DFT Calculations and NMR Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20Nootcharin">W. Nootcharin</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Sujittra"> S. Sujittra</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Mayuso"> K. Mayuso</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Kornphimol"> K. Kornphimol</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Rawiwan"> M. Rawiwan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver has distinct antibacterial properties and has been used as a component of commercial products with many applications. An increasing number of commercial products cause risks of silver effects for human and environment such as the symptoms of Argyria and the release of silver to the environment. Therefore, the detection of silver in the aquatic environment is important. The colorimetric chemosensor is designed by the basic of ligand interactions with a metal ion, leading to the change of signals for the naked-eyes which are very useful method to this application. Dithizone ligand is considered as one of the effective chelating reagents for metal ions due to its high selectivity and sensitivity of a photochromic reaction for silver as well as the linear backbone of dithizone affords the rotation of various isomeric forms. The present study is focused on the conformation and interaction of silver ion and silver nanoparticles (AgNPs) with dithizone using density functional theory (DFT). The interaction parameters were determined in term of binding energy of complexes and the geometry optimization, frequency of the structures and calculation of binding energies using density functional approaches B3LYP and the 6-31G(d,p) basis set. Moreover, the interaction of silver–dithizone complexes was supported by UV–Vis spectroscopy, FT-IR spectrum that was simulated by using B3LYP/6-31G(d,p) and 1H NMR spectra calculation using B3LYP/6-311+G(2d,p) method compared with the experimental data. The results showed the ion exchange interaction between hydrogen of dithizone and silver atom, with minimized binding energies of silver–dithizone interaction. However, the result of AgNPs in the form of complexes with dithizone. Moreover, the AgNPs-dithizone complexes were confirmed by using transmission electron microscope (TEM). Therefore, the results can be the useful information for determination of complex interaction using the analysis of computer simulations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title="silver nanoparticles">silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=dithizone" title=" dithizone"> dithizone</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=NMR" title=" NMR"> NMR</a> </p> <a href="https://publications.waset.org/abstracts/46327/interaction-evaluation-of-silver-ion-and-silver-nanoparticles-with-dithizone-complexes-using-dft-calculations-and-nmr-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46327.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">207</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">458</span> Preparation and in vitro Bactericidal and Fungicidal Efficiency of NanoSilver/Methylcellulose Hydrogel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Panacek">A. Panacek</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Kilianova"> M. Kilianova</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Prucek"> R. Prucek</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Husickova"> V. Husickova</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Vecerova"> R. Vecerova</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Kolar"> M. Kolar</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Kvitek"> L. Kvitek</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Zboril"> R. Zboril</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work we describe the preparation of NanoSilver/methylcellulose hydrogel containing silver nanoparticles (NPs) for topical bactericidal applications. Highly concentrated dispersion of silver NPs as high as of 5g/L of silver with diameter of 10nm was prepared by reduction of AgNO3 via strong reducing agent NaBH4. Silver NPs were stabilized by addition of sodium polyacrylate in order to prevent their aggregation at such high concentration. This way synthesized silver NPs were subsequently incorporated into methylcellulose suspension at elevated temperature resulting in formation of NanoSilver/methylcellulose hydrogel when temperature cooled down to laboratory conditions. In vitro antibacterial activity assay proved high bactericidal and fungicidal efficiency of silver NPs alone in the form of dispersion as well as in the form of hydrogel against broad spectrum of bacteria and yeasts including highly multiresistant strains such as methicillin-resistant Staphylococcus aureus. A very low concentrations of silver as low as 0.84mg/L Ag in as-prepared dispersion gave antibacterial performance. NanoSilver/methylcellulose hydrogel showed antibacterial action at the lowest used silver concentration equal to 25mg/L. Such prepared NanoSilver/methylcellulose hydrogel represent promising topical antimicrobial formulation for treatment of burns and wounds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial" title="antimicrobial">antimicrobial</a>, <a href="https://publications.waset.org/abstracts/search?q=burn" title=" burn"> burn</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogel" title=" hydrogel"> hydrogel</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20NPs" title=" silver NPs"> silver NPs</a> </p> <a href="https://publications.waset.org/abstracts/6458/preparation-and-in-vitro-bactericidal-and-fungicidal-efficiency-of-nanosilvermethylcellulose-hydrogel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6458.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">457</span> Design of Dendritic Molecules Bearing Donor-Acceptor Groups (Pyrene-Bodipy): Optical and Photophysical Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pasquale%20Porcu">Pasquale Porcu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mireille%20Vonlanthen"> Mireille Vonlanthen</a>, <a href="https://publications.waset.org/abstracts/search?q=Gerardo%20Zaragoza-Gal%C3%A1n"> Gerardo Zaragoza-Galán</a>, <a href="https://publications.waset.org/abstracts/search?q=Ernesto%20Rivera"> Ernesto Rivera</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we report the synthesis of a novel series of dendritic molecules bearing donor-acceptor groups (pyrene-bodipy) with potential applications in energy transfer. Initially, first and second generation Fréchet type dendrons (Py2-G1OH and Py4-G2OH) were prepared from 1-pyrenylbutanol and 3,5-dihydroxybenzylic alcohol. These compounds were further linked to a bodipy unit via an esterification reaction in order to obtain the desired products (Bodipy-G1Py2) and Bodipy-G2Py4). These compounds were fully characterized by FTIR and 1H and 13C NMR spectroscopy and their molecular weights were determined by MALDITOF. The optical and photophysical properties of these molecules were evaluated by absorbance and fluorescence spectroscopy, in order to compare their behaviour with other analogue molecules. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bodipy" title="bodipy">bodipy</a>, <a href="https://publications.waset.org/abstracts/search?q=dendritic%20molecules" title=" dendritic molecules"> dendritic molecules</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20properties" title=" optical properties"> optical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=pyrene" title=" pyrene"> pyrene</a> </p> <a href="https://publications.waset.org/abstracts/44616/design-of-dendritic-molecules-bearing-donor-acceptor-groups-pyrene-bodipy-optical-and-photophysical-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44616.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">283</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">456</span> Beijerinckia indica Extracellular Extract Mediated Green Synthesis of Silver Nanoparticles with Antioxidant and Antibacterial Activities against Clinical Pathogens</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gopalu%20Karunakaran">Gopalu Karunakaran</a>, <a href="https://publications.waset.org/abstracts/search?q=Matheswaran%20Jagathambal"> Matheswaran Jagathambal</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Van%20Minh"> Nguyen Van Minh</a>, <a href="https://publications.waset.org/abstracts/search?q=Evgeny%20Kolesnikov"> Evgeny Kolesnikov</a>, <a href="https://publications.waset.org/abstracts/search?q=Denis%20Kuznetsov"> Denis Kuznetsov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigated the use of <em>Beijerinckia indica</em> extracellular extract for the synthesis of silver nanoparticles using AgNO<sub>3</sub>. The formation of nanoparticles was confirmed by different methods, such as UV-Vis absorption spectroscopy, XRD, FTIR, EDX, and TEM analysis. The formation of silver nanoparticles (AgNPs) was confirmed by the change in color from light yellow to dark brown. The absorbance peak obtained at 430 nm confirmed the presence of silver nanoparticles. The XRD analysis showed the cubic crystalline phase of the synthesized nanoparticles. FTIR revealed the presence of groups that acts as stabilizing and reducing agents for silver nanoparticles formation. The synthesized silver nanoparticles were generally found to be spherical in shape with size ranging from 5 to 20 nm, as evident by TEM analysis. These nanoparticles were found to inhibit pathogenic bacterial strains. This work proved that the bacterial extract is a potential eco-friendly candidate for the synthesis of silver nanoparticles with promising antibacterial and antioxidant properties.  <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title="antioxidant activity">antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title=" antimicrobial activity"> antimicrobial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Beijerinckia%20indica" title=" Beijerinckia indica"> Beijerinckia indica</a>, <a href="https://publications.waset.org/abstracts/search?q=characterisation" title=" characterisation"> characterisation</a>, <a href="https://publications.waset.org/abstracts/search?q=extracellular%20extracts" title=" extracellular extracts"> extracellular extracts</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/66845/beijerinckia-indica-extracellular-extract-mediated-green-synthesis-of-silver-nanoparticles-with-antioxidant-and-antibacterial-activities-against-clinical-pathogens" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66845.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">340</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">455</span> Control of IL-23 Release in Dendritic Cells Protects Mice from Imiquimod-Induced Psoriasis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xingxin%20Wu">Xingxin Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Fenli%20Shao"> Fenli Shao</a>, <a href="https://publications.waset.org/abstracts/search?q=Tao%20Tan"> Tao Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Tan"> Yang Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Sun"> Yang Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiang%20Xu"> Qiang Xu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Psoriasis is a chronic inflammatory skin disease that affects about 2% of the world's population. IL-23 signaling plays a key role in the pathogenesis of psoriasis. Control of IL-23 release by small molecule compounds during developing psoriasis has not been well established. Here, we show that compound 1, a small molecule nature product, protected mice from imiquimod-induced psoriasis with improved skin lesions, reduced skin thickness, and reduced IL-23 mRNA expression in the skin tissue. FACS results showed compound 1 reduced the number of dendritic cells in the skin. Interestingly, compound 1 was not able to ameliorate IL-23-induced psoriasis-like skin inflammation in mice. Further, compound 1 inhibited MyD88-dependent IL-23 mRNA expression induced by LPS, CpG and imiquimod in BMDC cells, but not MyD88-independent CD80 and CD86 expression induced by LPS. The methods included real-time PCR, western blot, H & E staining, FACS and ELISA et al. In conclusion, compound 1 regulates MyD88-dependent signaling to control IL-23 release in dendritic cells, which improves imiquimod-induced psoriasis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dendritic%20cells" title="dendritic cells">dendritic cells</a>, <a href="https://publications.waset.org/abstracts/search?q=IL-23" title=" IL-23"> IL-23</a>, <a href="https://publications.waset.org/abstracts/search?q=toll-like%20receptor%20signaling" title=" toll-like receptor signaling"> toll-like receptor signaling</a>, <a href="https://publications.waset.org/abstracts/search?q=psoriasis" title=" psoriasis"> psoriasis</a> </p> <a href="https://publications.waset.org/abstracts/29061/control-of-il-23-release-in-dendritic-cells-protects-mice-from-imiquimod-induced-psoriasis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29061.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">645</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">454</span> In-situ Fabrication of Silver-PDMS Nanocomposite Membrane with Application in Olefine Separation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Tirgarbahnamiri">P. Tirgarbahnamiri</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Mahravani"> S. Mahravani</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Haddadpour"> N. Haddadpour</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Yaghmaie"> F. Yaghmaie</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Barazandeh"> F. Barazandeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, silver nanoparticle-Polydimethylsiloxane membrane (SNP-PDMS) was prepared with an in-situ reduction method using AgNO3 in poly (dimethylsiloxane) hardener. Optical and mechanical properties as well as functionality of these membranes were determined employing, UV-Vis spectrophotometry, FTIR, strain-stress test and liquid/liquid filtration measurements. Silver nanoparticles are known to selectively absorb Olefins and may be used for separation of Alkanes from olefins. Yellow color of silver nanocomposites and transparency of blank polymer were observed employing optical microscope. λmax in 415-420 nm regions in UV-Vis spectrophotometry are related to silver nanoparticles absorbance. Based on stress-strain test results, tensile strength of silver nanoparticle PDMS (SNP-PDMS) membranes is higher than PDMS films of comparable size and thickness. Moreover, permeability of SNP-PDMS membranes were characterized using similar olefin/paraffin pair using a simple bench scale separation set- up. The silver -PDMS membranes retain their color and UV-vis characteristics for extended periods of time exceeding several months. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposite%20membrane" title="nanocomposite membrane">nanocomposite membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20separation" title=" gas separation"> gas separation</a>, <a href="https://publications.waset.org/abstracts/search?q=facilitated%20transport" title=" facilitated transport"> facilitated transport</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanocomposite" title=" silver nanocomposite"> silver nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=PDMS" title=" PDMS"> PDMS</a>, <a href="https://publications.waset.org/abstracts/search?q=in-situ%20reduction" title=" in-situ reduction"> in-situ reduction</a> </p> <a href="https://publications.waset.org/abstracts/21367/in-situ-fabrication-of-silver-pdms-nanocomposite-membrane-with-application-in-olefine-separation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21367.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">332</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">453</span> An Easy-Applicable Method for In situ Silver Nanoparticles Preparation into Wool Fibers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salwa%20Mowafi">Salwa Mowafi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Rehan"> Mohamed Rehan</a>, <a href="https://publications.waset.org/abstracts/search?q=Hany%20Kafafy"> Hany Kafafy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, three different systems including room temperature, conventional water bath heating and microwave irradiation technique will be employed in the fabrication of silver nanoparticle-wool fibers. The silver nanoparticles will be synthesized in-situ incorporated into wool fibers under redox active bio-template of wool protein which facilitates the reduction of Ag+ to nanoparticulate Ag0. Silver NPs incorporated wool fiber will be characterized by scanning electron microscopy, energy dispersive X-ray, FTIR, TGA, silver content and X-ray photoelectron spectroscopy. The mechanism of binding Ag NPs in-situ incorporated wool fibers matrix will be discussed. The effect of silver nanoparticles on the coloration, antimicrobial, UV-protection and catalytic properties of the wool fibers will be evaluated. The overall results of this study indicate that the Ag NPs in-situ incorporated wool fibers will be applied as colorants for wool fibers with improving in its multi-functionality properties. So, this study provides a simple approach for innovative protein fibers design by applying the optical properties of Plasmonic noble metal nanoparticles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microwave%20irradiation%20technique" title="microwave irradiation technique">microwave irradiation technique</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-functionality%20properties" title=" multi-functionality properties"> multi-functionality properties</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=wool%20fibers" title=" wool fibers"> wool fibers</a> </p> <a href="https://publications.waset.org/abstracts/52765/an-easy-applicable-method-for-in-situ-silver-nanoparticles-preparation-into-wool-fibers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52765.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">207</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">452</span> Silver Nanoparticle Application in Food Packaging and Impacts on Food Safety and Consumer’s Health</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Worku%20Dejene%20Bekele">Worku Dejene Bekele</a>, <a href="https://publications.waset.org/abstracts/search?q=Andr%C3%A1s%20Marczika%20Csilla%20S%C3%B6r%C3%B6s"> András Marczika Csilla Sörös</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silver nanoparticles are silver metal with a size of 1-100nm. The most common source of silver nanoparticles is inorganic salts. Nanoparticles can be ingested through our foods and constitute nanoparticles and silver ions, whether as an additive or by migrants and, in some cases, as a pollutant. Silver nanoparticles are the most widely applicable engineered nanomaterials, especially for antimicrobial function. Ag nanoparticles give different advantages in the case of food safety, quality, and overall acceptability; however, they affect the health of humans and animals, putting them at risk of health problems and environmental pollution. Silver nanoparticles have been used widely in food packaging technologies, especially in water treatments, meat and meat products, fruit, and many other food products. This is for bio-preservation from food products. The primary goal of this review is to determine the safety and health impact of Ag nanoparticles application in food packaging and analysis of the human organs more affected by this preservative technology, to assess the implications of a nanoparticle on food safety, to determine the effects of nanoparticles on consumers health and to determine the impact of nanotechnology on product acceptability. But currently, much research has demonstrated that there is cause to believe that silver nanoparticles may have toxicological effects on biological organs and systems. The silver nanoparticles affect DNA expression, gastrointestinal barriers, lungs, and other breathing organs illness. Silver particles and molecules are very toxic. During its application in food packaging, food industries used the thinnest particle. This particle can potentially affect the gastrointestinal tracts-it suffers from mucus production, DNA, lungs, and other breezing organs. This review is targeted to demonstrate the knowledge gap that industrials use in the application of silver nanoparticles in food packaging and preservation and its health effects on the consumer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=food%20preservatives" title="food preservatives">food preservatives</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20impact" title=" health impact"> health impact</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticle" title=" nanoparticle"> nanoparticle</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticle" title=" silver nanoparticle"> silver nanoparticle</a> </p> <a href="https://publications.waset.org/abstracts/183084/silver-nanoparticle-application-in-food-packaging-and-impacts-on-food-safety-and-consumers-health" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183084.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">69</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">451</span> Green Synthesis of Silver Nanoparticles Using Echinacea Flower Extract and Characterization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masood%20Hussain">Masood Hussain</a>, <a href="https://publications.waset.org/abstracts/search?q=Erol%20Pehlivan"> Erol Pehlivan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmet%20Avci"> Ahmet Avci</a>, <a href="https://publications.waset.org/abstracts/search?q=Ecem%20Guder"> Ecem Guder</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Green synthesis of silver nanoparticles (AgNPs) was carried out by using echinacea flower extract as reducing/protecting agent. The effects of various operating parameters and additives on the dimensions such as stirring rate, temperature, pH of the solution, the amount of extract and concentration of silver nitrate were optimized in order to achieve monodispersed spherical and small size echinacea protected silver nanoparticles (echinacea-AgNPs) through biosynthetic method. The surface roughness and topography of synthesized metal nanoparticles were confirmed by using Atomic Force Microscopy (AFM). High-Resolution Transmission Electron Microscopic (HRTEM) results elaborated the formation of uniformly distributed Echinacea protected AgNPs (Echinacea-AgNPs) having an average size of 30.2±2nm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Echinacea%20flower%20extract" title="Echinacea flower extract">Echinacea flower extract</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20synthesis" title=" green synthesis"> green synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=morphology" title=" morphology"> morphology</a> </p> <a href="https://publications.waset.org/abstracts/72673/green-synthesis-of-silver-nanoparticles-using-echinacea-flower-extract-and-characterization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72673.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">422</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">450</span> Fungicidal Action of the Mycogenic Silver Nanoparticles Against Aspergillus niger Inciting Collar Rot Disease in Groundnut (Arachis hypogaea L.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Sarada%20Jayalakshmi%20Devi%20B.%20Bhaskar">R. Sarada Jayalakshmi Devi B. Bhaskar</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Khayum%20Ahammed"> S. Khayum Ahammed</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20N.%20V.%20K.%20V.%20Prasad"> T. N. V. K. V. Prasad </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Use of bioagents and biofungicides is safe to manage the plant diseases and to avoid human health hazards which improves food security. Myconanotechnology is the study of nanoparticles synthesis using fungi and their applications. The present work reports on preparation, characterization and antifungal activity of biogenic silver nanoparticles produced by the fungus Trichoderma sp. which was collected from groundnut rhizosphere. The culture filtrate of Trichoderma sp. was used for the reduction of silver ions (Ag+) in AgNO3 solution to the silver (Ag0) nanoparticles. The different ages (4 days, 6 days, 8 days, 12 days, and 15 days) of culture filtrates were screened for the synthesis of silver nanoparticles. Synthesized silver nanoparticles were characterized using UV-Vis spectrophotometer, particle size and zeta potential analyzer, Fourier Transform Infrared Spectrophotometer (FTIR) and Transmission Electron Microscopy. Among all the treatments the silver nitrate solution treated with six days aged culture filtrate of Trichoderma sp. showed the UV absorption peak at 440 nm with maximum intensity (0.59) after 24 hrs incubation. The TEM micrographs showed the spherical shaped silver nanoparticles with an average size of 30 nm. The antifungal activity of silver nanoparticles against Aspergillus niger causing collar rot disease in groundnut and aspergillosis in humans showed the highest per cent inhibition at 100 ppm concentration (74.8%). The results points to the usage of these mycogenic AgNPs in agriculture to control plant diseases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=groundnut%20rhizosphere" title="groundnut rhizosphere">groundnut rhizosphere</a>, <a href="https://publications.waset.org/abstracts/search?q=Trichoderma%20sp." title=" Trichoderma sp."> Trichoderma sp.</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles%20synthesis" title=" silver nanoparticles synthesis"> silver nanoparticles synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=antifungal%20activity" title=" antifungal activity"> antifungal activity</a> </p> <a href="https://publications.waset.org/abstracts/26859/fungicidal-action-of-the-mycogenic-silver-nanoparticles-against-aspergillus-niger-inciting-collar-rot-disease-in-groundnut-arachis-hypogaea-l" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26859.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">499</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">449</span> Removal of Iron (II) from Wastewater in Oil Field Using 3-(P-Methyl) Phenyl-5-Thionyl-1,2,4-Triazoline Assembled on Silver Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20M.%20S.%20Azzam">E. M. S. Azzam</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Ahmed"> S. A. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20H.%20Mohamed"> H. H. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Adly"> M. A. Adly</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20A.%20M.%20Gad"> E. A. M. Gad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work we prepared 3-(p-methyl) phenyl-5-thionyl-1,2,4-triazoline (C1). The nanostructure of the prepared C1 compound was fabricated by assembling on silver nanoparticles. The UV and TEM analyses confirm the assembling of C1 compound on silver nanoparticles. The effect of C1 compound on the removal of Iron (II) from Iron contaminated samples and industrial wastewater samples (produced water from oil processing facility) were studied before and after their assembling on silver nanoparticles. The removal of Iron was studied at different concentrations of FeSO4 solution (5, 14 and 39 mg/l) and field sample concentration (661 mg/l). In addition, the removal of Iron (II) was investigated at different times. The Prepared compound and its nanostructure with AgNPs show highly efficient in removing the Iron ions. Quantum chemical descriptors using DFT was discussed. The output of the study pronounces that the C1 molecule can act as chelating agent for Iron (II). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=triazole%20derivatives" title="triazole derivatives">triazole derivatives</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=iron%20%28II%29" title=" iron (II)"> iron (II)</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20field" title=" oil field"> oil field</a> </p> <a href="https://publications.waset.org/abstracts/93747/removal-of-iron-ii-from-wastewater-in-oil-field-using-3-p-methyl-phenyl-5-thionyl-124-triazoline-assembled-on-silver-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93747.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">657</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">448</span> Hybrid Recovery of Copper and Silver from Photovoltaic Ribbon and Ag finger of End-Of-Life Solar Panels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Patcharawit">T. Patcharawit</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Kansomket"> C. Kansomket</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Wongnaree"> N. Wongnaree</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Kritsrikan"> W. Kritsrikan</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Yingnakorn"> T. Yingnakorn</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Khumkoa"> S. Khumkoa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recovery of pure copper and silver from end-of-life photovoltaic panels was investigated in this paper using an effective hybrid pyro-hydrometallurgical process. In the first step of waste treatment, solar panel waste was first dismantled to obtain a PV sheet to be cut and calcined at 500°C, to separate out PV ribbon from glass cullet, ash, and volatile while the silicon wafer containing silver finger was collected for recovery. In the second step of metal recovery, copper recovery from photovoltaic ribbon was via 1-3 M HCl leaching with SnCl₂ and H₂O₂ additions in order to remove the tin-lead coating on the ribbon. The leached copper band was cleaned and subsequently melted as an anode for the next step of electrorefining. Stainless steel was set as the cathode with CuSO₄ as an electrolyte, and at a potential of 0.2 V, high purity copper of 99.93% was obtained at 96.11% recovery after 24 hours. For silver recovery, the silicon wafer containing silver finger was leached using HNO₃ at 1-4 M in an ultrasonic bath. In the next step of precipitation, silver chloride was then obtained and subsequently reduced by sucrose and NaOH to give silver powder prior to oxy-acetylene melting to finally obtain pure silver metal. The integrated recycling process is considered to be economical, providing effective recovery of high purity metals such as copper and silver while other materials such as aluminum, copper wire, glass cullet can also be recovered to be reused commercially. Compounds such as PbCl₂ and SnO₂ obtained can also be recovered to enter the market. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrorefining" title="electrorefining">electrorefining</a>, <a href="https://publications.waset.org/abstracts/search?q=leaching" title=" leaching"> leaching</a>, <a href="https://publications.waset.org/abstracts/search?q=calcination" title=" calcination"> calcination</a>, <a href="https://publications.waset.org/abstracts/search?q=PV%20ribbon" title=" PV ribbon"> PV ribbon</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20finger" title=" silver finger"> silver finger</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20panel" title=" solar panel"> solar panel</a> </p> <a href="https://publications.waset.org/abstracts/144135/hybrid-recovery-of-copper-and-silver-from-photovoltaic-ribbon-and-ag-finger-of-end-of-life-solar-panels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144135.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">447</span> One Step Green Synthesis of Silver Nanoparticles and Their Biological Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samy%20M.%20Shaban">Samy M. Shaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Aiad"> Ismail Aiad</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20M.%20El-Sukkary"> Mohamed M. El-Sukkary</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20A.%20Soliman"> E. A. Soliman</a>, <a href="https://publications.waset.org/abstracts/search?q=Moshira%20Y.%20El-Awady"> Moshira Y. El-Awady</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In situ and green synthesis of cubic and spherical silver nanoparticles were developed using sun light as reducing agent in the presence of newly prepared cationic surfactant which acting as capping agents. The morphology of prepared silver nanoparticle was estimated by transmission electron microscope (TEM) and the size distribution determined by dynamic light scattering (DLS). The hydrophobic chain length of the prepared surfactant effect on the stability of the prepared silver nanoparticles as clear from zeta-potential values. Also by increasing chain length of the used capping agent the amount of formed nanoparticle increase as indicated by increasing the absorbance. Both prepared surfactants and surfactants capping silver nanoparticles showed high antimicrobial activity against gram positive and gram-negative bacteria. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photosynthesis" title="photosynthesis">photosynthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=hexaonal%20shapes" title=" hexaonal shapes"> hexaonal shapes</a>, <a href="https://publications.waset.org/abstracts/search?q=zetapotential" title=" zetapotential"> zetapotential</a>, <a href="https://publications.waset.org/abstracts/search?q=biological%20activity" title=" biological activity"> biological activity</a> </p> <a href="https://publications.waset.org/abstracts/18087/one-step-green-synthesis-of-silver-nanoparticles-and-their-biological-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18087.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">459</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=dendritic%20silver&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=dendritic%20silver&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=dendritic%20silver&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=dendritic%20silver&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=dendritic%20silver&page=6">6</a></li> <li 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