▎ 摘　　要

The requisite to obtain reduced graphene oxide as an individual sheet and to maintain it in the reduced form introduces a new way of manipulative nanocomposite systems (e.g., semiconductor or metal nanoparticle and graphene composite). Herein, we developed a simple suitable UV-.assisted photocatalytic reduction method to prepare the most viable nanocomposite ZnO/RGO. Graphene oxide undergoes reduction reaction in ethanol-water system as it accepts electrons from UV irradiated semiconductor (ZnO), and subsequently characterized using different standard techniques. The presence of graphene in the composites were confirmed by X-ray diffraction (XRD), Raman, FTIR, SEM, TEM, and X-ray photoelectron spectroscopy (XPS) analysis. The highly efficient ZnO/RGO nanocomposite exhibited enhanced photocatalytic degradation performance for the degradation of methylene blue, with a maximum removal rate of (similar to 80%) as compared with pure ZnO nanoparticles (similar to 68%). This effective increase in degradation were caused by the prevention of electron-hole pair recombination in ZnO with the introduction of RGO. These findings suggest that the synthesized ZnO/RGO nanocomposite via photocatalytic approach not only offers UV-assisted reduction technique, but also open up a new way to obtain photoactive graphene-semiconductors, which could be effectively used in various application. (c) 2017 The Electrochemical Society. All rights reserved.