▎ 摘　　要

Novel flower-like Cu3SnS4 microspheres and a series of Cu3SnS4/reduced graphene oxide composites were synthesized by a simple one-pot solvothermal method. The structure and morphology of samples were characterized by SEM, TEM, XRD, XPS, Raman spectroscopy, and N-2 adsorption-desorption isotherms. The flower-like CTS microspheres loaded on the surface of rGO are well-dispersive and smaller than these without graphene oxide, which can provide more photocatalytic active sites. CTS/rGO-30 degraded 97% of methyl orange within 120 min under visible light irradiation, which was nearly 1.2 and 2.4-times higher than the CTS and GO samples. Moreover, CTS/rGO-30 exhibited excellent stability and recoverability. The UV?Vis diffuse reflectance spectra was used to explore the photocatalytic degradation mechanism. The results indicated that CTS/rGO have a narrow band-gap and efficient separation of electron-hole pairs, which can absorb and utilize light energy better.