To improve the utilization efficiency of the Bi₂₅FeO₄₀ catalyst, Bi₂₅FeO₄₀-reduced graphene oxide (rGO) composite photo-catalysts were prepared by a facile hydrothermal method. The photocatalysts afforded fast degradation performance and high photocatalytic efficiency for degradation of phenol and p-chlorophenol under exposure to visible light irradiation.