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composite catalyst</title> <meta name="description" content="Search results for: nano composite catalyst"> <meta name="keywords" content="nano composite catalyst"> <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 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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="nano composite catalyst"> <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> 3714</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: nano composite catalyst</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3714</span> Synthesis and Evaluation of Heterogeneous Nano-Catalyst: Cr Loaded in to MCM-41</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Salemi%20Golezania">A. Salemi Golezania</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sharifi%20Fateha"> A. Sharifi Fateha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study a nano-composite catalyst was synthesized by incorporation of chromium into the framework of MCM-41 as a base catalyst. Mesoporous silica molecular sieves MCM-41 were synthesized under Hydrothermal Continues pH Adjusting Path Way. Then, MCM-41 was impregnated by chromium nitrate aqueous solution for several times under water aspiration. Raw powder was cured by heat treatment in vacuum furnace at 500°C. Phase formation, morphology and gas absorption properties of resulted materials were characterized by XRD, TEM and BET analysis, respectively. The results showed that high quality hexagonal meso structure as a matrix and Cr as a second phase has been formed with a narrow size pore diameter distribution and high surface area in Cr/MCM-41 nano-composite structure. The specific surface and total volume of porosity of the synthesized nanocomposite are obtained 931m^2/gr and 1.12 cm^3/gr, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano-catalyst" title="nano-catalyst">nano-catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=MCM-41" title=" MCM-41"> MCM-41</a>, <a href="https://publications.waset.org/abstracts/search?q=Cr%2FMCM-41" title=" Cr/MCM-41"> Cr/MCM-41</a>, <a href="https://publications.waset.org/abstracts/search?q=Marine%20Science%20and%20Engineering" title=" Marine Science and Engineering"> Marine Science and Engineering</a> </p> <a href="https://publications.waset.org/abstracts/18399/synthesis-and-evaluation-of-heterogeneous-nano-catalyst-cr-loaded-in-to-mcm-41" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18399.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">386</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">3713</span> Development of a Nano-Alumina-Zirconia Composite Catalyst as an Active Thin Film in Biodiesel Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Marzban">N. Marzban</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20K.%20Heydarzadeh%20M.%20Pourmohammadbagher"> J. K. Heydarzadeh M. Pourmohammadbagher</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20H.%20Hatami"> M. H. Hatami</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Samia"> A. Samia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A nano-alumina-zirconia composite catalyst was synthesized by a simple aqueous sol-gel method using AlCl<sub>3</sub>.6H<sub>2</sub>O and ZrCl<sub>4</sub> as precursors. Thermal decomposition of the precursor and subsequent formation of γ-Al<sub>2</sub>O<sub>3</sub> and t-Zr were investigated by thermal analysis. XRD analysis showed that γ-Al<sub>2</sub>O<sub>3</sub> and t-ZrO<sub>2 </sub>phases were formed at 700 °C. FT-IR analysis also indicated that the phase transition to γ-Al<sub>2</sub>O<sub>3</sub> occurred in corroboration with X-ray studies. TEM analysis of the calcined powder revealed that spherical particles were in the range of 8-12 nm. The nano-alumina-zirconia composite particles were mesoporous and uniformly distributed in their crystalline phase. In order to measure the catalytic activity, esteriﬁcation reaction was carried out. Biodiesel, as a renewable fuel, was formed in a continuous packed column reactor. Free fatty acid (FFA) was esterified with ethanol in a heterogeneous catalytic reactor. It was found that the synthesized γ-Al<sub>2</sub>O<sub>3</sub>/ZrO<sub>2</sub> composite had the potential to be used as a heterogeneous base catalyst for biodiesel production processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano%20alumina-zirconia" title="nano alumina-zirconia">nano alumina-zirconia</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20catalyst" title=" composite catalyst"> composite catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20film" title=" thin film"> thin film</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a> </p> <a href="https://publications.waset.org/abstracts/58859/development-of-a-nano-alumina-zirconia-composite-catalyst-as-an-active-thin-film-in-biodiesel-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58859.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">232</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">3712</span> Oxidation of Alcohols Types Using Nano-Graphene Oxide (NGO) as Heterogeneous Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Gharib">Ali Gharib</a>, <a href="https://publications.waset.org/abstracts/search?q=Leila%20Vojdanifard"> Leila Vojdanifard</a>, <a href="https://publications.waset.org/abstracts/search?q=Nader%20Noroozi%20Pesyan"> Nader Noroozi Pesyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mina%20Roshani"> Mina Roshani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We describe an efficient method for oxidation of alcohols to related aldehydes and ketones by hydrogen peroxide as oxidizing agent, under reflux conditions. Nano-graphene oxide (NGO) as a heterogeneous catalyst was used and had their activity compared with other various catalysts. This catalyst was found to be an excellent catalyst for oxidation of alcohols. The effects of various parameters, including catalyst type, nature of the substituent in the alcohols and temperature, on the yield of the carboxylic acids were studied. Nano-graphene oxide was synthesized by the oxidation of graphite powders. This nanocatalyst was found to be highly efficient in this reaction and products were obtained in good to excellent yields. The recovered nano-catalyst was successfully reused for several runs without significant loss in its catalytic activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano-graphene%20oxide" title="nano-graphene oxide">nano-graphene oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=aldehyde" title=" aldehyde"> aldehyde</a>, <a href="https://publications.waset.org/abstracts/search?q=ketone" title=" ketone"> ketone</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a> </p> <a href="https://publications.waset.org/abstracts/40536/oxidation-of-alcohols-types-using-nano-graphene-oxide-ngo-as-heterogeneous-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40536.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">424</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">3711</span> Production of Renewable and Clean Bio-Fuel (DME) from Biomethanol over Copper Modified Alumina Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20I.%20Osman">Ahmed I. Osman</a>, <a href="https://publications.waset.org/abstracts/search?q=Jehad%20K.%20Abu-Dahrieh"> Jehad K. Abu-Dahrieh</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20W.%20Rooney"> David W. Rooney</a>, <a href="https://publications.waset.org/abstracts/search?q=Jillian%20Thompson"> Jillian Thompson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of loading of copper on the catalytic performance of different alumina support during the dehydration of methanol to dimethyl ether (DME) was performed in a fixed bed reactor. There are two levels of loading; low loading (1, 2, 4 and 6% Cu wt/wt) and high loading (10 and 15% Cu wt/wt) on both AC350 (alumina catalyst calcined at 350) and AC550 (alumina catalyst calcined at 550), to study the effect of loading and the effect of the support during methanol dehydration to DME (MTD). The catalysts were characterized by TGA, XRD, BET, TPD-NH3, TEM and DRIFT-Pyridine. Under reaction conditions where the temperature ranged from 180-300˚C with a WHSV= 12.1 h-1 it was found that all the catalysts calcined at 550˚C showed higher activity than those calcined at 350˚C. In this study, the optimum catalyst was 6% Cu/AC550. This catalyst showed a high degree of stability, had one half activity of the pure catalyst (AC550) and double the activity of the optimum catalyst calcined at 350˚C (6% Cu/AC350). So, we recommended 6% Cu/AC550 for the production of DME from methanol. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-fuel" title="bio-fuel">bio-fuel</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20composite%20catalyst" title=" nano composite catalyst"> nano composite catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=DME" title=" DME"> DME</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu-Al2O3" title=" Cu-Al2O3"> Cu-Al2O3</a> </p> <a href="https://publications.waset.org/abstracts/3494/production-of-renewable-and-clean-bio-fuel-dme-from-biomethanol-over-copper-modified-alumina-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3494.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">297</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">3710</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">3709</span> Production and Characterization of Sol-Enhanced Zn-Ni-Al2O3 Nano Composite Coating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soroor%20Ghaziof">Soroor Ghaziof</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Gao"> Wei Gao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sol-enhanced Zn-Ni-Al2O3 nano-composite coatings were electroplated on mild steel by our newly developed sol-enhanced electroplating method. In this method, transparent Al2O3 sol was added into the acidic Zn-Ni bath to produced Zn-Ni-Al2O3 nano-composite coatings. The chemical composition, microstructure and mechanical properties of the composite and alloy coatings deposited at two different agitation speed were investigated. The structure of all coatings was single γ-Ni5Zn21 phase. The composite coatings possess refined crystals with higher microhardness compared to Zn-Ni alloy coatings. The wear resistance of Zn-Ni coatings was improved significantly by incorporation of alumina nano particles into the coatings. Higher agitation speed provided more uniform coatings with smaller grain sized and slightly higher microhardness. Considering composite coatings, high agitation speeds may facilitate co-deposition of alumina in the coatings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microhardness" title="microhardness">microhardness</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-enhanced%20electroplating" title=" sol-enhanced electroplating"> sol-enhanced electroplating</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20resistance" title=" wear resistance"> wear resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=Zn-Ni-Al2O3%20composite%20coatings" title=" Zn-Ni-Al2O3 composite coatings "> Zn-Ni-Al2O3 composite coatings </a> </p> <a href="https://publications.waset.org/abstracts/26084/production-and-characterization-of-sol-enhanced-zn-ni-al2o3-nano-composite-coating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26084.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">501</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">3708</span> Ferroelectricity in Nano-Composite Films of Sodium Nitrite: Starch Prepared by Drop Cast Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Navneet%20Dabra">Navneet Dabra</a>, <a href="https://publications.waset.org/abstracts/search?q=Baljinder%20Kaur"> Baljinder Kaur</a>, <a href="https://publications.waset.org/abstracts/search?q=Lakhbir%20Singh"> Lakhbir Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Annapu%20Reddy"> V. Annapu Reddy</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Nath">R. Nath</a>, <a href="https://publications.waset.org/abstracts/search?q=Dae-Yong%20Jeong"> Dae-Yong Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jasbir%20S.%20Hundal"> Jasbir S. Hundal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nano-composite ﬁlms of sodium nitrite (NaNO2): Starch with different proportions of NaNO2 and Starch have been prepared by drop cast technique. The ferroelectric hysteresis loops (P-V) have been traced using modified Sawyar-Tower circuit. The films containing equal proportions of NaNO2 and Starch exhibit optimized ferroelectric properties. The stability of the remanent polarization, Pr in the optimized nano-composite films exhibit improved stability over the pure NaNO2 ﬁlms. The Atomic Force Microscopy (AFM) has been employed to investigate the surface morphology. AFM images clearly reveal the nano sized particles of NaNO2 dispersed in starch with small value of surface roughness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ferroelectricity" title="ferroelectricity">ferroelectricity</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-composite%20%EF%AC%81lms" title=" nano-composite ﬁlms"> nano-composite ﬁlms</a>, <a href="https://publications.waset.org/abstracts/search?q=Atomic%20Force%20Microscopy%20%28AFM%29" title=" Atomic Force Microscopy (AFM)"> Atomic Force Microscopy (AFM)</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20composite%20film" title=" nano composite film"> nano composite film</a> </p> <a href="https://publications.waset.org/abstracts/17664/ferroelectricity-in-nano-composite-films-of-sodium-nitrite-starch-prepared-by-drop-cast-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17664.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">509</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">3707</span> Percentages of Alumina Phase and Different Ph on The Ha- Al2o3 Nano Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Tayyebi">S. Tayyebi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Mirjalili"> F. Mirjalili</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Samadi"> H. Samadi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Nemati"> A. Nemati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, hydroxyapatite-Alumina nano composite powder, containing 15,20 and 25% weight percent of reinforced alumina were prepared by chemical precipitation from the reaction between calcium nitrate tetrahydrate and di-ammonium hydrogen phosphate with ratio of Ca / p = 1.67 and different percentage of aluminum nitrate nona hydrate in different pH of 9,10 and 11. The microstructure and thermal stability of samples were measured by X-ray diffraction (XRD), infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The results showed that the presence of reinforced alumina phase reduced the degree of crystallinity of hydroxyapatite phase and increased its decomposition to tricalcium phosphate phase. Microstructural analysis showed that the hydroxyapatite-alumina nano composite powder was obtained with spherical shape and size of less than 100 nm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomaterial" title="biomaterial">biomaterial</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyapatite" title=" hydroxyapatite"> hydroxyapatite</a>, <a href="https://publications.waset.org/abstracts/search?q=alumina" title=" alumina"> alumina</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20composite" title=" nano composite"> nano composite</a>, <a href="https://publications.waset.org/abstracts/search?q=precipitation%20method" title=" precipitation method"> precipitation method</a> </p> <a href="https://publications.waset.org/abstracts/31034/percentages-of-alumina-phase-and-different-ph-on-the-ha-al2o3-nano-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31034.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">534</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">3706</span> NiO-CeO2 Nano-Catalyst for the Removal of Priority Organic Pollutants from Wastewater through Catalytic Wet Air Oxidation at Mild Conditions </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anushree">Anushree</a>, <a href="https://publications.waset.org/abstracts/search?q=Chhaya%20Sharma"> Chhaya Sharma</a>, <a href="https://publications.waset.org/abstracts/search?q=Satish%20Kumar"> Satish Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Catalytic wet air oxidation (CWAO) is normally carried out at elevated temperature and pressure. This work investigates the potential of NiO-CeO<sub>2 </sub>nano-catalyst in CWAO of paper industry wastewater under milder operating conditions of 90 °C and 1 atm. The NiO-CeO<sub>2 </sub>nano-catalysts were synthesized by a simple co-precipitation method and characterized by X-ray diffraction (XRD), before and after use, in order to study any crystallographic change during experiment. The extent of metal-leaching from the catalyst was determined using the inductively coupled plasma optical emission spectrometry (ICP-OES). The catalytic activity of nano-catalysts was studied in terms of total organic carbon (TOC), adsorbable organic halides (AOX) and chlorophenolics (CHPs) removal. Interestingly, mixed oxide catalysts exhibited higher activity than the corresponding single-metal oxides. The maximum removal efficiency was achieved with Ce<sub>40</sub>Ni<sub>60</sub> catalyst. The results indicate that the CWAO process is efficient in removing the priority organic pollutants from wastewater, as it exhibited up to 59% TOC, 55% AOX, and 54 % CHPs removal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catalysis" title="catalysis">catalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-materials" title=" nano-materials"> nano-materials</a>, <a href="https://publications.waset.org/abstracts/search?q=NiO-CeO2" title=" NiO-CeO2"> NiO-CeO2</a>, <a href="https://publications.waset.org/abstracts/search?q=paper%20mill" title=" paper mill"> paper mill</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater" title=" wastewater"> wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=wet%20air%20oxidation" title=" wet air oxidation"> wet air oxidation</a> </p> <a href="https://publications.waset.org/abstracts/38416/nio-ceo2-nano-catalyst-for-the-removal-of-priority-organic-pollutants-from-wastewater-through-catalytic-wet-air-oxidation-at-mild-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38416.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">254</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">3705</span> Mechanical and Chemical Properties of Zn-Ni-Al2O3 Nano Composite Coatings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soroor%20Ghaziof">Soroor Ghaziof</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Gao"> Wei Gao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Zn alloy and composite coatings are widely used in buildings and structures, automobile and fasteners industries to protect steel component from corrosion. In this paper, Zn-Ni-Al2O3 nano-composite coatings were electrodeposited on mild steel using a novel sol enhanced electroplating method. In this method, transparent Al2O3 sol was added into the acidic Zn-Ni bath to produced Zn-Ni-Al2O3 nano-composite coatings. The effect of alumina sol on the electrodeposition process, and coating properties was investigated using cyclic voltammetry, XRD, ESEM and Tafel test. Results from XRD tests showed that the structure of all coatings was single γ-Ni5Zn21 phase. Cyclic voltammetry results showed that the electrodeposition overpotential was lower in the presence of alumina sol in the bath, and caused the reduction potential of Zn-Ni to shift to more positive values. Zn-Ni-Al2O3 nano composite coatings produced more uniform and compact deposits, with fine grained microstructure when compared to Zn-Ni coatings. The corrosion resistance of Zn-Ni coatings was improved significantly by incorporation of alumina nano particles into the coatings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zn-Ni-Al2O3%20composite%20coatings" title="Zn-Ni-Al2O3 composite coatings">Zn-Ni-Al2O3 composite coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=steel" title=" steel"> steel</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-enhanced%20electroplating" title=" sol-enhanced electroplating"> sol-enhanced electroplating</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion%20resistance" title=" corrosion resistance "> corrosion resistance </a> </p> <a href="https://publications.waset.org/abstracts/34286/mechanical-and-chemical-properties-of-zn-ni-al2o3-nano-composite-coatings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34286.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">392</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">3704</span> Synthesis and Characterization of Nano-Alumina Using Neem Oil as the Template for Efficient Hydrogen Generation via Photo-Hydrolysis of Sodium Borohydride</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dina%20M.%20Abd%20El-Aty">Dina M. Abd El-Aty</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Aman"> D. Aman</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20G.%20Zaki"> E. G. Zaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Salem"> Heba M. Salem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A friendly environmental source of energy as hydrogen was produced by photo-hydrolysis of hydrogen storage material as sodium borohydride (NaBH4), which is non-toxic and stores a high percentage of hydrogen. The photoreaction was produced under visible light and nano-alumina as a catalyst. In this study, we use more economical and friendly environmental oil as a template to produce a nano-catalyst. The prepared catalyst was characterized by X-Ray diffraction, N2-adsorption-desorption, Fourier Transforms Infrared, Scanning Electron microscope and X-Ray Photoelectron Spectroscopy. Different parameters such as catalyst weight, NaBH4 weight and time of irradiation were studied to obtain a highly efficient photo-hydrolysis reaction. The reaction is pseudo-first order and the hydrogen production rate was determined as 1500 ml min-1 g-1 at the optimum conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photo-reaction" title="photo-reaction">photo-reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-alumina" title=" nano-alumina"> nano-alumina</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20production" title=" hydrogen production"> hydrogen production</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20borohydride" title=" sodium borohydride"> sodium borohydride</a>, <a href="https://publications.waset.org/abstracts/search?q=visible%20light" title=" visible light"> visible light</a> </p> <a href="https://publications.waset.org/abstracts/167816/synthesis-and-characterization-of-nano-alumina-using-neem-oil-as-the-template-for-efficient-hydrogen-generation-via-photo-hydrolysis-of-sodium-borohydride" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167816.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">83</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">3703</span> On the Fatigue Behavior of a Triphasic Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Minak">G. Minak</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Ghelli"> D. Ghelli</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zucchelli"> A. Zucchelli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the results of an experimental characterization of a glass fibre-epoxy composite. The behavior of the traditional two-phase composite has been compared with the one of a new three-phase composite where the epoxy matrix was modified by addition of a 3% weight fraction of montmorillonite nano-particles. Two different types of nano-clays, Cloisite® 30B and RXG7000, produced by Southern Clay Products Inc., have been considered. Three-point bending tests, both monotonic and cyclic, were carried out. A strong reduction of the ultimate flexural strength upon nano-modification has been observed in quasi-static tests. Fatigue tests yielded a smaller strength loss. In both quasi-static and fatigue tests a more pronounced tendency to delamination has been noticed in three-phase composites, especially in the case of 30B nano-clay, with respect to the standard two-phase glass fiber composite. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bending%20fatigue" title="bending fatigue">bending fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy%20resin" title=" epoxy resin"> epoxy resin</a>, <a href="https://publications.waset.org/abstracts/search?q=glass%20fiber" title=" glass fiber"> glass fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=montmorillonite" title=" montmorillonite"> montmorillonite</a> </p> <a href="https://publications.waset.org/abstracts/2069/on-the-fatigue-behavior-of-a-triphasic-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2069.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">446</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">3702</span> The Elastic Field of a Nano-Pore, and the Effective Modulus of Composites with Nano-Pores</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xin%20Chen">Xin Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Moxiao%20Li"> Moxiao Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Xuechao%20Sun"> Xuechao Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Fei%20Ti"> Fei Ti</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaobao%20Liu"> Shaobao Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Feng%20Xu"> Feng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian%20Jian%20Lu"> Tian Jian Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The composite materials with pores have the characteristics of light weight, sound insulation, and heat insulation, and have broad prospects in many fields, including aerospace. In general, the stiffness of such composite is less than the stiffness of the matrix material, limiting their applications. In this paper, we establish a theoretical model to analyze the deformation mechanism of a nano-pore. The interface between the pores and matrix material is described by the Gurtin-Murdoch model. By considering scale effect related with current deformation, we estimate the effective mechanical properties (e.g., effective shear modulus and bulk modulus) of a composite with nano-pores. Due to the scale effect, the elastic field in the composite was changed and local hardening was observed around the nano-pore, and the effective shear modulus and effective bulk modulus were found to be a function of the surface energy. The effective shear modulus increase with the surface energy and decrease with the size of the nano-pores, and the effective bulk modulus decrease with the surface energy and increase with the size of the nano-pores. These results have potential applications in the nanocomposite mechanics and aerospace field. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20mechanics" title="composite mechanics">composite mechanics</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-inhomogeneity" title=" nano-inhomogeneity"> nano-inhomogeneity</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-pores" title=" nano-pores"> nano-pores</a>, <a href="https://publications.waset.org/abstracts/search?q=scale%20effect" title=" scale effect"> scale effect</a> </p> <a href="https://publications.waset.org/abstracts/109464/the-elastic-field-of-a-nano-pore-and-the-effective-modulus-of-composites-with-nano-pores" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109464.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">134</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">3701</span> Application of Electrochemically Prepared PPy/MWCNT:MnO2 Nano-Composite Film in Microbial Fuel Cells for Sustainable Power Generation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rajeev%20jain">Rajeev jain</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20C.%20Tiwari"> D. C. Tiwari</a>, <a href="https://publications.waset.org/abstracts/search?q=Praveena%20Mishra"> Praveena Mishra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nano-composite of polypyrrole/multiwalled carbon nanotubes:mangenese oxide (PPy/MWCNT:MnO2) was electrochemically deposited on the surface of carbon cloth (CC). The nano-composite was structurally characterized by FTIR, SEM, TEM and UV-Vis studies. Nano-composite was also characterized by cyclic voltammetry (CV), current voltage measurements (I-V) and the optical band gaps of film were evaluated from UV-Vis absorption studies. The PPy/MWCNT:MnO2 nano-composite was used as anode in microbial fuel cell (MFC) for sewage waste water treatment, power and coulombic efficiency measurement. The prepared electrode showed good electrical conductivity (0.1185 S m-1). This was also supported by band gap measurements (direct 0.8 eV, indirect 1.3 eV). The obtained maximum power density was 1125.4 mW m-2, highest chemical oxygen demand (COD) removal efficiency was 93% and the maximum coulombic efficiency was 59%. For the first time PPy/MWCNT:MnO2 nano-composite for MFC prepared from nano-composite electrode having the potential for the use in MFC with good stability and better adhesion of microbes is being reported. The SEM images confirm the growth and development of microbe’s colony. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20cloth" title="carbon cloth">carbon cloth</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-polymerization" title=" electro-polymerization"> electro-polymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=functionalization" title=" functionalization"> functionalization</a>, <a href="https://publications.waset.org/abstracts/search?q=microbial%20fuel%20cells" title=" microbial fuel cells"> microbial fuel cells</a>, <a href="https://publications.waset.org/abstracts/search?q=multi%20walled%20carbon%20nanotubes" title=" multi walled carbon nanotubes"> multi walled carbon nanotubes</a>, <a href="https://publications.waset.org/abstracts/search?q=polypyrrole" title=" polypyrrole"> polypyrrole</a> </p> <a href="https://publications.waset.org/abstracts/44299/application-of-electrochemically-prepared-ppymwcntmno2-nano-composite-film-in-microbial-fuel-cells-for-sustainable-power-generation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44299.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">271</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">3700</span> Optimization of Biodiesel Production from Sunflower Oil Using Central Composite Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pascal%20Mwenge">Pascal Mwenge</a>, <a href="https://publications.waset.org/abstracts/search?q=Jefrey%20Pilusa"> Jefrey Pilusa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tumisang%20Seodigeng"> Tumisang Seodigeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current study investigated the effect of catalyst ratio and methanol to oil ratio on biodiesel production by using central composite design. Biodiesel was produced by transesterification using sodium hydroxide as a homogeneous catalyst, a laboratory scale reactor consisting of flat bottom flask mounts with a reflux condenser, and a heating plate was used to produce biodiesel. Key parameters, including time, temperature, and mixing rate was kept constant at 60 minutes, 60 <sup>o</sup>C and 600 RPM, respectively. From the results obtained, it was observed that the biodiesel yield depends on catalyst ratio and methanol to oil ratio. The highest yield of 50.65% was obtained at catalyst ratio of 0.5 wt.% and methanol to oil mole ratio 10.5. The analysis of variances of biodiesel yield showed the R Squared value of 0.8387. A quadratic mathematical model was developed to predict the biodiesel yield in the specified parameters ranges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ANOVA" title="ANOVA">ANOVA</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a>, <a href="https://publications.waset.org/abstracts/search?q=central%20composite%20design" title=" central composite design"> central composite design</a> </p> <a href="https://publications.waset.org/abstracts/98851/optimization-of-biodiesel-production-from-sunflower-oil-using-central-composite-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98851.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">151</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">3699</span> Effect of Doping Ag and N on the Photo-Catalytic Activity of ZnO/CuO Nanocomposite for Degradation of Methyl Orange under UV and Visible Radiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20P.%20Yadav">O. P. Yadav</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nano-size Ag-N co-doped ZnO/CuO composite photo-catalyst has been synthesized by chemical method and characterized using XRD, TEM, FTIR, AAS and UV-Vis spectroscopic techniques. Photo-catalytic activity of as-synthesized nanomaterial has been studied using degradation of methyl orange as a probe under UV as well as visible radiations. Ag-N co-doped ZnO/CuO composite showed higher photo-catalytic activity than Ag- or N-doped ZnO and undoped ZnO-CuO composite photo-catalysts. The observed highest activity of Ag-N co-doped ZnO-CuO among the studied photo-catalysts is attributed to the cumulative effects of lowering of band-gap energy and decrease of recombination rate of photo-generated electrons and holes owing to doped N and Ag, respectively. Effects of photo-catalyst load, pH and substrate initial concentration on degradation of methyl orange have also been studied. Photo-catalytic degradation of methyl orange follows pseudo first order kinetics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=degradation" title="degradation">degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalyst" title=" photocatalyst"> photocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopy" title=" spectroscopy"> spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a> </p> <a href="https://publications.waset.org/abstracts/18641/effect-of-doping-ag-and-n-on-the-photo-catalytic-activity-of-znocuo-nanocomposite-for-degradation-of-methyl-orange-under-uv-and-visible-radiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18641.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">497</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">3698</span> Electrical Properties of Nanocomposite Fibres Based On Cellulose and Graphene Nanoplatelets Prepared Using Ionic Liquids </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shaya%20Mahmoudian">Shaya Mahmoudian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Sazegar"> Mohammad Reza Sazegar</a>, <a href="https://publications.waset.org/abstracts/search?q=Nazanin%20Afshari"> Nazanin Afshari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Graphene, a single layer of carbon atoms in a hexagonal lattice, has recently attracted great attention due to its unique mechanical, thermal and electrical properties. The high aspect ratio and unique surface features of graphene resulted in significant improvements of the nano composites properties. In this study, nano composite fibres made of cellulose and graphene nano platelets were wet spun from solution by using ionic liquid, 1-ethyl-3-methylimidazolium acetate (EMIMAc) as solvent. The effect of graphene loading on the thermal and electrical properties of the nanocomposite fibres was investigated. The nano composite fibres characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. XRD analysis revealed a cellulose II crystalline structure for regenerated cellulose and the nano composite fibres. SEM images showed a homogenous morphology and round cross section for the nano composite fibres along with well dispersion of graphene nano platelets in regenerated cellulose matrix. The incorporation of graphene into cellulose matrix generated electrical conductivity. At 6 wt. % of graphene, the electrical conductivity was 4.7 × 10-4 S/cm. The nano composite fibres also showed considerable improvements in thermal stability and char yield compared to pure regenerated cellulose fibres. This work provides a facile and environmentally friendly method of preparing nano composite fibres based on cellulose and graphene nano platelets that can find several applications in cellulose-based carbon fibres, conductive fibres, apparel, etc. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title="nanocomposite">nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20nanoplatelets" title=" graphene nanoplatelets"> graphene nanoplatelets</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerated%20cellulose" title=" regenerated cellulose"> regenerated cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a> </p> <a href="https://publications.waset.org/abstracts/30979/electrical-properties-of-nanocomposite-fibres-based-on-cellulose-and-graphene-nanoplatelets-prepared-using-ionic-liquids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30979.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">350</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">3697</span> S-S Coupling of Thiols to Disulfides Using Ionic Liquid in the Presence of Free Nano Fe2O3 Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Askar%20Sabet">Askar Sabet</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdolrasoul%20Fakhraee"> Abdolrasoul Fakhraee</a>, <a href="https://publications.waset.org/abstracts/search?q=Motahahre%20Ramezanpour"> Motahahre Ramezanpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Noorallah%20Alipour"> Noorallah Alipour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An efficient and green method for oxidation of thiols to the corresponding disulfides is reported using ionic liquid [HSO3N(C2H4OSO3H)3] in the presence of free nano-Fe2O3 at 60°C. Ionic liquid is selective oxidant for S-S Coupling variety aliphatic and aromatic of thiols to corresponding disulfide in the presence of free nano-Fe2O3 as recoverable catalyst. Reaction has been performed in methanol as an inexpensive solvent. This reaction is clean and easy work-up with no side reaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thiol" title="thiol">thiol</a>, <a href="https://publications.waset.org/abstracts/search?q=disulfide" title=" disulfide"> disulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=ionic%20liquid" title=" ionic liquid"> ionic liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20nano-Fe2O3" title=" free nano-Fe2O3"> free nano-Fe2O3</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=coupling" title=" coupling"> coupling</a> </p> <a href="https://publications.waset.org/abstracts/16556/s-s-coupling-of-thiols-to-disulfides-using-ionic-liquid-in-the-presence-of-free-nano-fe2o3-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16556.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">288</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">3696</span> Effect of Dyeing on the Cotton/Polyester Blended Fabric Treated by Tetra Carboxylic Acid (BTCA) and Nano TiO2</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aryan%20Azad">Aryan Azad</a>, <a href="https://publications.waset.org/abstracts/search?q=Sun%20Jae%20Kim"> Sun Jae Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cotton fabric is particularly prone to wrinkling. BTCA has been confirmed as the most effective reagent with sodium hypophosphite (SHP) as catalyst for decreasing the wrinkle issue. Using nano TiO2 as aco-catalyst could improve the catalytic reaction of the BTCA as well. In this study, the effect of dying process using reactive/disperse on the cotton/polyester blended fabric (65/35%) which is previously treated by nano TiO2 and BTCA, were investigated. Results were compared by samples which were not treated by nano TiO2 and BTCA by scanning electronic microscopy (SEM). Results showed, samples which were treated by mixing nano TiO2 and BTCA have not absorbed dye as much as untreated samples. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cotton%2Fpolyester" title="cotton/polyester">cotton/polyester</a>, <a href="https://publications.waset.org/abstracts/search?q=dyeing%20process" title=" dyeing process"> dyeing process</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20titanium%20dioxide%20%28TiO2%29" title=" nano titanium dioxide (TiO2)"> nano titanium dioxide (TiO2)</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20hypophosphite%20%28SHP%29" title=" sodium hypophosphite (SHP)"> sodium hypophosphite (SHP)</a>, <a href="https://publications.waset.org/abstracts/search?q=Tetra%20carboxylic%20acid%20%28BTCA%29" title=" Tetra carboxylic acid (BTCA)"> Tetra carboxylic acid (BTCA)</a> </p> <a href="https://publications.waset.org/abstracts/57849/effect-of-dyeing-on-the-cottonpolyester-blended-fabric-treated-by-tetra-carboxylic-acid-btca-and-nano-tio2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57849.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">203</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">3695</span> Investigation of Tribological Behavior of Electrodeposited Cr, Co-Cr and Co-Cr/Tio2 Nano-Composite Coatings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Mahdavi">S. Mahdavi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.R.%20Allahkaram"> S.R. Allahkaram </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electrodeposition is a simple and economic technique for precision coating of different shaped substrates with pure metal, alloy or composite films. Dc electrodeposition was used to produce Cr, Co-Cr and Co-Cr/TiO2 nano-composite coatings from Cr(III) based electrolytes onto 316L SS substrates. The effects of TiO2 nano-particles concentration on co-deposition of these particles along with Cr content and microhardness of the coatings were investigated. Morphology of the Cr, Co-Cr and Co-Cr/TiO2 coatings besides their tribological behavior were studied. The results showed that increment of TiO2 nano-particles concentration from 0 to 30 g L-1 in the bath increased their co-deposition and Cr content of the coatings from 0 to 3.5 wt.% and from 23.7 to 31.2 wt.%, respectively. Microhardness of Cr coating was about 920 Hv which was higher than Co-Cr and even Co-Cr/TiO2 films. Microhardness of Co-Cr and Co-Cr/TiO2 coatings were improved by increasing their Cr and TiO2 content. All the coatings had nodular morphology and contained microcracks. Nodules sizes and the number of microcracks in the alloy and composite coatings were lower than the Cr film. Wear results revealed that the Co-Cr/TiO2 coating had the lowest wear loss between all the samples, while the Cr film had the worst wear resistance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Co-Cr%20alloy" title="Co-Cr alloy">Co-Cr alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=electrodeposition" title=" electrodeposition"> electrodeposition</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-composite" title=" nano-composite"> nano-composite</a>, <a href="https://publications.waset.org/abstracts/search?q=tribological%20behavior" title=" tribological behavior"> tribological behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=trivalent%20chromium" title=" trivalent chromium"> trivalent chromium</a> </p> <a href="https://publications.waset.org/abstracts/24529/investigation-of-tribological-behavior-of-electrodeposited-cr-co-cr-and-co-crtio2-nano-composite-coatings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24529.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">487</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">3694</span> Alginate Wrapped NiO-ZnO Nanocomposites-Based Catalyst for the Reduction of Methylene Blue</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Adam%20Abakar">Mohamed A. Adam Abakar</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20M.%20Asiri"> Abdullah M. Asiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Sher%20Bahadar%20Khan"> Sher Bahadar Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, nickel oxide-zinc oxide (NiO-ZnO) catalyst was embedded in an alginate polymer (Na alg/NiO-ZnO), a nanocomposite that was used as a nano-catalyst for catalytic conversion of deleterious contaminants such as organic dyes (Acridine Orange “ArO”, Methylene Blue “MB”, Methyl Orange “MO”) and 4-Nitrophenol “4-NP” as well. FESEM, EDS, FTIR and XRD techniques were used to identify the shape and structure of the nano-catalyst (Na alg/NiO-ZnO). UV spectrophotometry is used to collect the results and it showed greater and faster reduction rate for MB (illustrated in figures 2, 3, 4 and 5). Data recorded and processed, drawing and analysis of graphs achieved by using Origin 2018. Reduction percentage of MB was assessed to be 95.25 % in just 13 minutes. Furthermore, the catalytic property of Na alg/NiO-ZnO in the reduction of organic dyes was investigated using various catalyst amounts, dye types, reaction times and reducing agent dosages at room temperature (rt). NaBH4-assisted reduction of organic dyes was studied using alg/NiO-ZnO as a potential catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alginate" title="Alginate">Alginate</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20oxides" title=" metal oxides"> metal oxides</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposites-based" title=" nanocomposites-based"> nanocomposites-based</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction" title=" reduction"> reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalytic%20degradation" title=" photocatalytic degradation"> photocatalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment" title=" water treatment"> water treatment</a> </p> <a href="https://publications.waset.org/abstracts/169064/alginate-wrapped-nio-zno-nanocomposites-based-catalyst-for-the-reduction-of-methylene-blue" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169064.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">72</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">3693</span> Behavior of Fibre Reinforced Polymer Composite with Nano-Ceramic Particle under Ballistic Impact and Quasi-Static Punch-Shear Loading </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Rajalakshmi">K. Rajalakshmi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Vasudevan"> A. Vasudevan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The performance of Fibre Reinforced Polymer composite with the nano-ceramic particle as function of time and thickness of laminate which is subjected to ballistic impact and quasi-static punch-shear loading is investigated. The material investigated is made up of several layers of Kevlar fibres which are fabricated with nano-ceramic particles and epoxy resin by compression moulding. The ballistic impact and quasi-static punch-shear loading are studied experimentally and numerically. The failure mechanism is observed using scanning electron microscope (SEM). The result obtained in the experiment and numerical studies are compared. Due to nano size of the ceramic particle, the strength to weight ratio and penetrating resistance will improve in Fibre Reinforced Polymer composite which will have better impact property compared to ceramic plates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ballistic%20impact" title="ballistic impact">ballistic impact</a>, <a href="https://publications.waset.org/abstracts/search?q=Kevlar" title=" Kevlar"> Kevlar</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20ceramic" title=" nano ceramic"> nano ceramic</a>, <a href="https://publications.waset.org/abstracts/search?q=penetration" title=" penetration"> penetration</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer%20composite" title=" polymer composite"> polymer composite</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20plug" title=" shear plug"> shear plug</a> </p> <a href="https://publications.waset.org/abstracts/75932/behavior-of-fibre-reinforced-polymer-composite-with-nano-ceramic-particle-under-ballistic-impact-and-quasi-static-punch-shear-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75932.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">288</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">3692</span> Optimization of Biodiesel Production from Sunflower Oil Using Central Composite Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pascal%20Mwenge">Pascal Mwenge</a>, <a href="https://publications.waset.org/abstracts/search?q=Jefrey%20Pilusa"> Jefrey Pilusa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tumisang%20Seodigeng"> Tumisang Seodigeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current study investigated the effect of catalyst ratio and methanol to oil ratio on biodiesel production by using central composite design. Biodiesel was produced by transesterification using sodium hydroxide as a homogeneous catalyst, a laboratory scale reactor consisting of flat bottom flask mounts with a reflux condenser and a heating plate was used to produce biodiesel. Key parameters, including, time, temperature and mixing rate were kept constant at 60 minutes, 60 <sup>o</sup>C and 600 RPM, respectively. From the results obtained, it was observed that the biodiesel yield depends on catalyst ratio and methanol to oil ratio. The highest yield of 50.65% was obtained at catalyst ratio of 0.5 wt.% and methanol to oil mole ratio 10.5. The analysis of variances of biodiesel yield showed the R Squared value of 0.8387. A quadratic mathematical model was developed to predict the biodiesel yield in the specified parameters ranges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ANOVA" title="ANOVA">ANOVA</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=CCD" title=" CCD"> CCD</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a> </p> <a href="https://publications.waset.org/abstracts/92550/optimization-of-biodiesel-production-from-sunflower-oil-using-central-composite-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92550.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">206</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">3691</span> Influence of Nano-ATH on Electrical Performance of LSR for HVDC Insulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ju-Na%20Hwang">Ju-Na Hwang</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Hae%20Park"> Min-Hae Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Kee-Joe%20Lim"> Kee-Joe Lim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many studies have been conducted on DC transmission. Of power apparatus for DC transmission, High Voltage Direct Current (HVDC) cable systems are being evaluated because of the increase in power demand and transmission distance. Therefore, dc insulation characteristics of Liquid Silicone Rubber (LSR), which has various advantages such as short curing time and the ease of maintenance, were investigated to assess its performance as a HVDC insulation material for cable joints. The electrical performance of LSR added to Nano-Aluminum Trihydrate (ATH) was confirmed by measurements of the breakdown strength and electrical conductivity. In addition, field emission scanning electron microscope (FE-SEM) was used as a means of confirmation of nano-filler dispersion state. The LSR nano-composite was prepared by compounding LSR filled nano-sized ATH filler. The DC insulation properties of LSR added to nano-sized ATH fillers were found to be superior to those of the LSR without filler. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=liquid%20silicone%20rubber" title="liquid silicone rubber">liquid silicone rubber</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-composite" title=" nano-composite"> nano-composite</a>, <a href="https://publications.waset.org/abstracts/search?q=HVDC%20insulation" title=" HVDC insulation"> HVDC insulation</a>, <a href="https://publications.waset.org/abstracts/search?q=cable%20joints" title=" cable joints"> cable joints</a> </p> <a href="https://publications.waset.org/abstracts/6214/influence-of-nano-ath-on-electrical-performance-of-lsr-for-hvdc-insulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6214.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">462</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">3690</span> Evaluation of the Mechanical Properties of Nano TiO2 and Clay Filler Filled Epoxy Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Mimaroglu">A. Mimaroglu</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Unal"> H. Unal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the mechanical properties of nano filled epoxy composites were evaluated. The matrix material is epoxy. nano fillers are Al2O3, TiO2 and clay added in 2.5- 10 wt% by weight ratio. Test samples were prepared using an open mould type die. Mechanical tests were carried out. The tensile strength, elastic modulus, elongation at break and the hardness of the composite materials were obtained and evaluated. It was seen from the results that the filler content had a high influence on the level of the mechanical properties of the epoxy composites. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano" title="nano">nano</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy" title=" epoxy"> epoxy</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=fillers" title=" fillers"> fillers</a>, <a href="https://publications.waset.org/abstracts/search?q=clay" title=" clay"> clay</a> </p> <a href="https://publications.waset.org/abstracts/28293/evaluation-of-the-mechanical-properties-of-nano-tio2-and-clay-filler-filled-epoxy-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28293.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">390</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">3689</span> Comparison Between Nano Composite and Pits and Fissure Sealant: In Vitro Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osama%20Safwat%20Mohamed">Osama Safwat Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pits and fissures dental caries can be prevented using sealant material. This study aimed to compare the microleakage and interfacial morphology of flowable nanocomposites and conventional pit and fissure sealants. 60 extracted intact and caries-free permanent mandibular third molars. The teeth were randomly divided into three groups (n = 20) according to the material used for pit and fissure sealant. Group I: Unfilled resin-based pits and fissure sealant, Group II: Unfilled resin-based pits and fissure sealant with bond and Group III: Nano flowable composite resin with bond. The results showed that nano-flowable composite was significantly better than the conventional sealants groups p = 0.000. As well there was better as well, there were gaps between sealants and the tooth surfaces in groups I and II, but for group III, there was close contact between the nano-flowable composite and tooth surfaces. It was concluded that nano-flowable composite showed better microleakage and interfacial morphology results than conventional pits and fissure sealant and offered promising results at the fissure sealing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pits%20and%20fissures" title="pits and fissures">pits and fissures</a>, <a href="https://publications.waset.org/abstracts/search?q=Sealant" title=" Sealant"> Sealant</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=dental%20caries" title=" dental caries"> dental caries</a> </p> <a href="https://publications.waset.org/abstracts/146517/comparison-between-nano-composite-and-pits-and-fissure-sealant-in-vitro-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146517.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">128</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">3688</span> Preparation of Fe3Si/Ferrite Micro-and Nano-Powder Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Radovan%20Bures">Radovan Bures</a>, <a href="https://publications.waset.org/abstracts/search?q=Madgalena%20Streckova"> Madgalena Streckova</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Faberova"> Maria Faberova</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavel%20Kurek"> Pavel Kurek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Composite material based on Fe3Si micro-particles and Mn-Zn nano-ferrite was prepared using powder metallurgy technology. The sol-gel followed by autocombustion process was used for synthesis of Mn0.8Zn0.2Fe2O4 ferrite. 3 wt.% of mechanically milled ferrite was mixed with Fe3Si powder alloy. Mixed micro-nano powder system was homogenized by the Resonant Acoustic Mixing using ResodynLabRAM Mixer. This non-invasive homogenization technique was used to preserve spherical morphology of Fe3Si powder particles. Uniaxial cold pressing in the closed die at pressure 600 MPa was applied to obtain a compact sample. Microwave sintering of green compact was realized at 800°C, 20 minutes, in air. Density of the powders and composite was measured by Hepycnometry. Impulse excitation method was used to measure elastic properties of sintered composite. Mechanical properties were evaluated by measurement of transverse rupture strength (TRS) and Vickers hardness (HV). Resistivity was measured by 4 point probe method. Ferrite phase distribution in volume of the composite was documented by metallographic analysis. It has been found that nano-ferrite particle distributed among micro- particles of Fe3Si powder alloy led to high relative density (~93%) and suitable mechanical properties (TRS >100 MPa, HV ~1GPa, E-modulus ~140 GPa) of the composite. High electric resistivity (R~6.7 ohm.cm) of prepared composite indicate their potential application as soft magnetic material at medium and high frequencies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=micro-%20and%20nano-composite" title="micro- and nano-composite">micro- and nano-composite</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20magnetic%20materials" title=" soft magnetic materials"> soft magnetic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave%20sintering" title=" microwave sintering"> microwave sintering</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20and%20electric%20properties" title=" mechanical and electric properties"> mechanical and electric properties</a> </p> <a href="https://publications.waset.org/abstracts/25707/preparation-of-fe3siferrite-micro-and-nano-powder-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25707.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">364</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">3687</span> Zinc Oxid Nanotubes Modified by SiO2 as a Recyclable Catalyst for the Synthesis of 2,3-Dihydroquinazolin-4(1H)-Ones</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rakhshan%20Hakimelahi">Rakhshan Hakimelahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, zinc oxid nano tubes have attracted much attention. The direct use of zinc oxid nano tubes modified by SiO2 as recoverable catalysts for organic reactions is very rare. The catalysts were characterized by XRD. The average particle size of ZnO catalysts is 57 nm and there are high density defects on nano tubes surfaces. A simple and efficient method for the quinazolin derivatives synthesis from the condensation isatoic anhydride and an aromatic aldehyde with ammonium acetate in the presence of a catalytic amount zinc oxid nano tubes modified by SiO2 is described. The reason proposed for higher catalytic activity of zinc oxid nano tubes modified by SiO2 is a combination effect of the small particle size and high-density surface defects. The practical and simple method led to excellent yields of the 2,3-Di hydro quinazolin-4(1H)-one derivatives under mild conditions and within short times. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=2" title="2">2</a>, <a href="https://publications.waset.org/abstracts/search?q=3-Dihydroquinazolin-4%281H%29-one%20derivatives" title="3-Dihydroquinazolin-4(1H)-one derivatives">3-Dihydroquinazolin-4(1H)-one derivatives</a>, <a href="https://publications.waset.org/abstracts/search?q=reusable%20catalyst" title=" reusable catalyst"> reusable catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=SiO2" title=" SiO2"> SiO2</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc%20oxid%20nanotubes" title=" zinc oxid nanotubes"> zinc oxid nanotubes</a> </p> <a href="https://publications.waset.org/abstracts/57045/zinc-oxid-nanotubes-modified-by-sio2-as-a-recyclable-catalyst-for-the-synthesis-of-23-dihydroquinazolin-41h-ones" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57045.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">372</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">3686</span> Nano-Filled Matrix Reinforced by Woven Carbon Fibers Used as a Sensor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Hamdi">K. Hamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Aboura"> Z. Aboura</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Harizi"> W. Harizi</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Khellil"> K. Khellil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Improving the electrical properties of organic matrix composites has been investigated in several studies. Thus, to extend the use of composites in more varied application, one of the actual barrier is their poor electrical conductivities. In the case of carbon fiber composites, organic matrix are in charge of the insulating properties of the resulting composite. However, studying the properties of continuous carbon fiber nano-filled composites is less investigated. This work tends to characterize the effect of carbon black nano-fillers on the properties of the woven carbon fiber composites. First of all, SEM observations were performed to localize the nano-particles. It showed that particles penetrated on the fiber zone (figure1). In fact, by reaching the fiber zone, the carbon black nano-fillers created network connectivity between fibers which means an easy pathway for the current. It explains the noticed improvement of the electrical conductivity of the composites by adding carbon black. This test was performed with the four points electrical circuit. It shows that electrical conductivity of 'neat' matrix composite passed from 80S/cm to 150S/cm by adding 9wt% of carbon black and to 250S/cm by adding 17wt% of the same nano-filler. Thanks to these results, the use of this composite as a strain gauge might be possible. By the way, the study of the influence of a mechanical excitation (flexion, tensile) on the electrical properties of the composite by recording the variance of an electrical current passing through the material during the mechanical testing is possible. Three different configuration were performed depending on the rate of carbon black used as nano-filler. These investigation could lead to develop an auto-instrumented material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20fibers%20composites" title="carbon fibers composites">carbon fibers composites</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-fillers" title=" nano-fillers"> nano-fillers</a>, <a href="https://publications.waset.org/abstracts/search?q=strain-sensors" title=" strain-sensors"> strain-sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=auto-instrumented" title=" auto-instrumented"> auto-instrumented</a> </p> <a href="https://publications.waset.org/abstracts/46982/nano-filled-matrix-reinforced-by-woven-carbon-fibers-used-as-a-sensor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46982.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">411</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">3685</span> An Efficient Green Catalyst for Chemo-Selectiveoxidative Coupling of Thiols</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Kolvari">E. Kolvari</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Koukabi"> N. Koukabi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sabet"> A. Sabet</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Fakhraee"> A. Fakhraee</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ramezanpour"> M. Ramezanpour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A green and efficient method for oxidation of thiols to the corresponding disulfides is reported using free nano-iron oxide in the H2O2 and methanol as solvent at room tempereture. H2O2 is anoxidant for S-S coupling variety aromatic of thiols to corresponding disulfide in the presence of supported iron oxide as recoverable catalyst. This reaction is clean, fast, mild and easy work-up with no side reaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thiol" title="thiol">thiol</a>, <a href="https://publications.waset.org/abstracts/search?q=disulfide" title=" disulfide"> disulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20nano-iron%20oxide" title=" free nano-iron oxide"> free nano-iron oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=H2O2" title=" H2O2"> H2O2</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=coupling" title=" coupling"> coupling</a> </p> <a href="https://publications.waset.org/abstracts/11505/an-efficient-green-catalyst-for-chemo-selectiveoxidative-coupling-of-thiols" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11505.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">353</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=nano%20composite%20catalyst&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=nano%20composite%20catalyst&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=nano%20composite%20catalyst&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=nano%20composite%20catalyst&page=5">5</a></li> <li class="page-item"><a class="page-link" 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