Investigation of Photocatalytic Degradation of Methyl Orange by Using Nano-Sized ZnO Catalysts

By Changchun Chen, Jiangfeng Liu, Ping Liu, Benhai Yu. 2011

137 citations recorded by the source corpus.

Nano-sized ZnO catalysts were prepared by a direct precipitation method under the optimal conditions (cal-cination of precursors at 550?C for 120 min). The as-synthesized ZnO catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and UV-Vis spectroscopy. The photocatalytic prop-erties of ZnO nanoparticles were investigated via methyl orange (MO) as a model organic compound under UV light irradiation. The influence of operating parameters on MO degradation including the amount of ZnO catalysts, pH value of solutions, and the photodegradation temperature was thoroughly examined. In addition, the kinetic process of photocatalytic degradation of MO using nano-sized ZnO catalyst was also examined, and the degradation of MO follow the first order kinetics.

Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/35beebbf20beee648dda94e1bb4ca76e59274778

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Citations in the corpus

• Optical and photocatalytic properties of La-doped ZnO nanoparticles prepared via precipitation and mechanical milling method (2013, background): “This catalyst has a low quantum yield rate due to its low rate of electron transfer to oxygen and so allows for a high rate of recombination of excited electrons and holes [9].”