▎ 摘　　要

NOVELTY - A silver sulfide-reduced graphene oxide-titania composite comprises a titania film surface-modified with sheet-shaped reduced graphene oxide and silver sulfide particles. USE - Silver sulfide-reduced graphene oxide-titania composite is useful as photocatalyst for decomposing rhodamine B (all claimed). ADVANTAGE - The composite has excellent photocatalytic activity, chemical stability, biocompatibility, and safety, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the composite, which involves preparing sodium gluconate and reduced graphene oxide into an electrolyte, setting a titanium anode and a titanium cathode, carrying out anodic oxidation to obtain titania film modified with reduced graphene oxide, soaking the film in soluble silver salt solution, thiourea solution, and ethanol solution for electrodeposition, taking out, drying, finishing the primary silver sulfide deposition, and repeating deposition several times.