▎ 摘　　要

Photocatalysis is an effective treatment technique for the removal of toxic pollutants present in water and wastewater. In this study, graphene@Fe-Ti bina r y oxide composites was prepared using a hydrothermal method and characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fouriertransform infrared spectroscopy, and Brunauer-Emmett-Teller surface area analysis. The prepared composite exhibited even distribution of the Fe-Ti bina r y oxide on the surface of graphene, with an average diameter of 16.4 nm and a surface area of 133.7 m(2)/g. The optical property was evaluated and the band gap was calculated to be 2.867 eV using solid-state UV-vis spectroscopy and the [F(R)h nu](1/2) plot. Lab-scale experiments were performed to evaluate the performance of graphene@Fe-Ti bina r y oxides to remove methyl blue (i.e. a dye) from wastewater. It was observed that the graphene loading had a significant effect on the photocatalytic activity of the composite and a composite with 20 % graphene showed the highest photocatalytic activity , with 100 % removal of the dye, after 20 min of irradiation time and a degradation rate constant of 0.213 min(-1). Besides, the possible photocatalytic dye degradation mechanism using graphene@Fe-Ti bina r y oxide composite has also been proposed.