▎ 摘　　要

The composite photocatalysts composed of BiPO4 and reduced graphene oxide (rGO) were synthesized by a facile hydrothermal method. Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), transmission electron spectroscopy (TEM), photoluminescence emission spectra (PL) and UV-vis diffuse reflection spectroscopy (DRS) were used to characterize the titled composites. The results showed that the BiPO4 particles can be immobilized on the surface of rGO sheets, and the crystallization phases of BiPO4 were significantly influenced by the amount of graphene. The phase transformation of BiPO4 crystal from hexagonal to monoclinic phase was observed. The introduction of rGO improved the optical properties of BiPO4 and thereby enhancing the utilization of light. Compared with pure BiPO4 under similar synthesis condition, the BiPO4/rGO composites exhibit a much higher photodegradation activity, which was confirmed by photoluminescence (PL) spectra and photocurrent (PC) generation. (C) 2014 Elsevier B.V. All rights reserved.