CdS-Based Photocatalysts for Solar Water Splitting

Photocatalytic water splitting for hydrogen production is a promising pathway for solar energy convention into chemicals. Among various semiconductor-based photocatalysts, cadmium sulfide (CdS) attracted extensive attentions due to the narrow band gap nature (2.4 eV) for efficient visible light absorption, suitable band position for water splitting, and outstanding photocatalytic activity. In this review, we summarize the recent advances for the synthesis of CdS, and modification strategies including heteroatom doping, loading cocatalysts, and hetero/homo-junction fabrication are also presented. Moreover, a brief perspective and challenges on CdS-based photocatalyst are also discussed.