▎ 摘　　要

Reduced graphene oxide supported molybdenum oxide @ silver phosphate (RGO-MoO3@Ag3PO4) ternary hybrid composite was prepared by simple mixing of RGO supported MoO3 nanorods into Ag3PO4 nanosphere. Upon visible light exposure, the photocatalytic degradation of MB revealed that the 30 wt.% RGO-MoO3@Ag3PO4 photocatalyst led to 2.9 times higher activities than pure Ag3PO4, 6.2 and 8.7 times compared to RGO-MoO, and pure MoO3 respectively. Degradation of MB using 30 wt.% RGO-MoO3@Ag3PO4 is 2.9 and 15 times higher compared to RhB and MO respectively. The downward band bending of Ag3PO4 at the interface of RGO-MoO3@Ag3PO4, was investigated based on the electric field formed. The formed electric field at the interface of RGO-MoO4@Ag3PO4 is found to be 50 mV which avoids the recombination rate of electron-hole pairs at the interfaces. This formed electric field promotes the higher separation efficiency of electrons-holes pairs and longer life time of photoexcited electrons in the RGO-MoO3@Ag3PO4 resulting higher efficiency and stability. RGO act as an electron acceptor and transporter during charge transfer process between MoO3 and Ag3PO4.