▎ 摘　　要

Efficient photocatalytic systems are needed to convert solar energy into chemical energy. In this work, a novel visible light-driven photocatalyst based on graphene loaded-ZnS/Ag2S quantum dots was prepared through a cation-exchange reaction between ZnS quantum dots and AgNO3. The resulting photocatalyst exhibited a high visible-light photocatalytic activity for H-2 production because of photoinduced interfacial charge transfer (IFCT) in the ZnS/Ag2S quantum dot heterostructures and electron transfer from ZnS/Ag2S to graphene. This work broadens the scope of designs for high-efficiency transition metal/sulfide photocatalysts.