▎ 摘　　要

NOVELTY - A tin disulfide-graphene composite photocatalyst has controllable size, excellent monodispersity and particle size of 500-800 nm. USE - Tin disulfide-graphene composite photocatalyst (claimed). ADVANTAGE - The tin disulfide-graphene composite photocatalyst material has uniform size and shape, and is prepared by a simple process. The tin disulfide-graphene composite photocatalyst material increases the efficiency of photocatalytic reaction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of tin disulfide-graphene composite photocatalyst, which involves dispersing graphene oxide in deionized water, performing ultrasonic treatment for 3 hours, centrifuging to obtain graphene oxide powder, dispersing graphene oxide powder in deionized water to obtain graphene oxide solution, adding anhydrous stannic chloride to graphene oxide solution, stirring, adding thiourea, stirring, transferring obtained solution to reactor which is lined with PTFE, cooling, collecting obtained dark green precipitate, washing and drying. The mass-volume concentration of graphene oxide and deionized water is 1/40 g/ml.