▎ 摘　　要

In the present paper, graphene-Ag3VO4 composites with broad-spectrum response were prepared by hydrothermal method, which performed high photocatalytic activity in decomposing Rhodamine B under visible light irradiation. The graphene content exhibited an obvious influence on the photocatalytic activity. Composite with 5 wt% graphene possessed the highest activity: the degradation rate reached about 92.3 %, which was nearly 1.5 times higher than that of the pure Ag3VO4. The enhancement of the photocatalytic activity was attributed to the synergetic effect between graphene and Ag3VO4 particles. Here, graphene was served as an excellent electron acceptor and transporter, which markedly decreased the recombination efficiency of electron-hole pairs and accelerated the degradation process.