TY - JFULL AU - K. Sowri Babu and P. Srinath and N. Rajeswara Rao and K. Venugopal Reddy PY - 2017/7/ TI - Effect of Gamma Irradiation on Structural and Optical Properties of ZnO/Mesoporous Silica Nanocomposite T2 - International Journal of Physical and Mathematical Sciences SP - 226 EP - 230 VL - 11 SN - 1307-6892 UR - https://publications.waset.org/pdf/10007477 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 126, 2017 N2 - The effect of gamma ray irradiation on morphology and optical properties of ZnO/Mesoporous silica (MPS) nanocomposite was studied. The ZnO/MPS nanocomposite was irradiated with gamma rays of doses 30, 60, and 90 kGy and dose-rate of irradiation was 0.15 kGy/hour. Irradiated samples are characterized with FE-SEM, FT-IR, UV-vis, and Photoluminescence (PL) spectrometers. SEM pictures showed that morphology changed from spherical to flake like morphology. UV-vis analysis showed that the band gap increased with increase of gamma ray irradiation dose. This enhancement of the band gap is assigned to the depletion of oxygen vacancies with irradiation. The intensity of PL peak decreased gradually with increase of gamma ray irradiation dose. The decrease in PL intensity is attributed to the decrease of oxygen vacancies at the interface due to poor interface and improper passivation between ZnO/MPS. ER -