▎ 摘　　要

In this study, graphene-zinc oxide-titanium dioxide (RGO-ZnO-TiO2) ternary hybrids are successfully synthesized by two methods called 'one step' and 'two steps', by using a simple microwave treatment of a solution containing graphene oxide, ZnO, TiO2, water and ethanol. Their morphology, structure, and photocatalytic performance in degradation of methylene blue, were characterized by scanning electron microscopy, energy dispersive x-ray analysis, x-ray diffraction analysis, Fourier transform infrared and UV-vis analysis. The results show that RGO-ZnO-TiO2 (GZT) hybrids (containing 7% graphene mass ratio) improve photodegradation efficiency 1.39- and 1.8-fold, compared with RGO-ZnO (GZT(0)) (containing 7% graphene mass ratio) and pure ZnO, because of reduction of electron-hole recombination in ZnO due to introduction of TiO2. Furthermore, we found that the photocatalytic activity in the 'one step' method is higher than in 'two steps'.