▎ 摘　　要

Three kinds of iron oxide/graphene composites were prepared using three different ferric salts [FeCl3. Fe(NO3)(3), FeSO4] to react with graphene oxide and followed by a heat treatment. Then, the structures of different iron oxide/graphene composites were compared and analyzed by IR spectra and scanning electron microscopy. After that the degradability using different iron oxide/graphene composites to degrade methylene blue was explored by ultraviolet spectra. The results showed that iron/graphene (FeCl3 as iron source) composite has better degradabibty under sunlight than that of other iron/graphene composites (Fe(NO3)(3) or FeSO4 as iron source).