BiVO4/ TiO2-graphene( BiVO4/ TiO2-GR) photocatalysts were prepared by a facile solvothermal method. The composite photocatalysts were characterized by X-ray diffraction,transmission electron microscopy,UV-Vis diffuse reflectance spectrometry,and photoluminescence spectrometry. The photocatalytic activity was evaluated by degradation of methylene blue( MB)under simulated sunlight irradiation. It is found that the composite photocatalysts have a strong absorption peak in the 530-800 nm range of visible light....