▎ 摘　　要

Herein, the ternary composite consisting of MoS3, Au core-Ag shell nanoparticles (Au@AgNP), and reduced graphene oxide (rGO) is synthesized for photocatalytic hydrogen evolution reaction. The various characterization studies reveal the co-existence of amorphous MoS3 nanoflakes and the Au@AgNP with the dual absorptions of surface plasmon resonance (SPR) in rGO nanosheets. With the help of single dye sensitization, the ternary composite exhibits a better photocatalytic activity of 9.6 mmol h(-1) g(-1) with the apparent quantum yield (AQY) of 7.8% and excellent long-term stability under visible light illumination. It also shows the wavelengthdependent photocatalytic activity under the different monochromatic light radiation. Interestingly, the photocatalytic performance of ternary composite further enhances when dual dyes are utilized for sensitization. The optimized photocatalytic reaction system shows a maximum H-2 production rate of 10.6 mmol h(-1)g(-1) with the AQY of 8.6%. The higher activity of ternary photocatalysts is attributed to the amorphous MoS3 nanoflakes with the exposed reactive sites over the conductive rGO nanosheets, which promotes the electron transfer from photoexcited dyes to MoS3. More importantly, the extended SPR absorption of Au@AgNP in-line with the maximum absorption of dye molecules improves light-harvesting ability and efficiently stimulates the dye excitation.