▎ 摘　　要

Photocatalytic water splitting for hydrogen evolution as an attractive strategy for developing sustainable energy by utilizing sunlight has attracted enormous research efforts. Cadmium sulfide (CdS) with visible light response and proper energy band structure has been studied intensively. To suppress the recombination of charge carriers and facilitate the hydrogen evolution reaction (HER) over CdS, electrically conductive graphene and active-site-abundant MoS2 have proven to be efficient dual cocatalysts to improve the photocatalytic HER performance of CdS. In this review, we will focus on the representative ternary composite photocatalysts of CdS-graphene-MoS2. The synthesis approaches are first summarized, followed by the discussion of the roles of each component in the composites. Then main attention will be paid to highlighting the effects of the microscopic structures of the components on the photocatalytic performance of the composites for HER applications. It is expected that this review could be helpful to the rational design and further optimization of semiconductor-based composite photocatalysts through materials engineering strategies for solar energy conversion.