The effect of ultrasonic irradiation on the structure,morphology and photocatalytic performance of ZnO nanoparticles by sol-gel method |
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| Institution: | 1. Department of Solid State Physics, Faculty of Physics, K. N. Toosi University of Technology, POB 15875-4416, Tehran, Iran;2. Department of Plant Biology, Faculty of Biological Science, Tarbiat Modares University, POB 14115-154, Tehran, Iran;1. Sonochemical Research Center, Department of Chemistry, Ferdowsi University of Mashhad, 91779 Mashhad, Iran;2. Environmental Chemistry Research Center, Department of Chemistry, Ferdowsi University of Mashhad, 91779 Mashhad, Iran;3. Samed Chemical Inds. Co., Mashhad, Iran;1. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India;2. Institute of Shipbuilding Technology, Bogda-Vasco, Goa, India;3. Department of Physics, Abasaheb Garware College, Pune, Maharashtra, India;1. Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz, Iran;2. Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz, Iran |
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| Abstract: | In this research, the effect of ultrasonic irradiation power (0, 75, 150 and 200 W) and time (0, 5, 15 and 20 min) on the structure, morphology and photocatalytic activity of zinc oxide nanoparticles synthesized by sol-gel method was investigated. Crystallographic structures and the morphologies of the resultant powders were determined by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns showed that ZnO samples were crystallized in their pure phase. The purity of samples was increased by increasing the ultrasonic irradiation power and time. Not only did ultrasonic irradiation unify both the structure and the morphology, but also it reduced the size and prohibited particles from aggregation. The optical behavior of the samples was studied by UV–vis spectroscopy. Photocatalytic activity of particles was measured by degradation of methyl orange under radiation of ultraviolet light. Ultrasound nanoparticles represented higher degradation compared to non-ultrasound ones. |
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| Keywords: | ZnO nanoparticles Ultrasonic Sol gel Photocatalyst |
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