CdS作为一种极具希望的分解水制氢的可见光响应催化剂，其应用受到高载流子复合率的限制。磷化物助催化剂作为一种廉价高效的助催化剂，日益得到人们的重视。目前磷化物助催化剂的负载受到“屏蔽效应”等负面因素影响难以在高负载量的条件下得到良好的助催化作用。这主要在于磷化物与MoS2等二硫化物不同，一般不具备易于剥离的层状结构，难以得到超薄片层。基于此，本项目聚焦Ni2P，GaP等磷化物，以石墨烯作为还原剂和模板，采用高温固相碳还原法制备超薄磷化物纳米片；研究高负载磷化物的CdS纳米片在可见光照射下的产氢性能；讨论助催化剂形貌，尺寸等因素对粉末光解水产氢过程的影响机制。本项目的实施可有效的解决CdS光催化剂载流子快速复合的科学问题，其制备方法在金属磷化物助催化剂方面具有较高的通用性和实用性。

CdS is a promising visible-light response catalyst for water splitting, but its application is limited to the high carrier recombination. Playing the role of cheap and efficient cocatalyst, metal phosphides have received increasing attention. At present, the loading of the phosphide cocatalyst is affected by negative factors such as "shielding effect", which prohibits the catalyst from obtaining a good catalytic performance under high loading conditions. This is mainly because metal phosphides are different from the metal disulfides such as MoS2，i.e.，they generally do not have a layered structure. As a result, it is extremely difficult to acquire ultrathin metal phosphide nanosheets via traditional ultrasonic peeling method. Based on this situation, our project focuses on the preparation of ultra-thin phosphides (Ni2P, GaP, etc) nanosheets via a high-temperature solid-phase carbon reduction method, using graphene as a reductive agent and morphology template; studying the hydrogen production performance of high-loading phosphide CdS nanosheets under visible light irradiation; discussing the influence mechanism of the morphology, size and other factors of cocatalyst on the hydrogen production process of powder photolysis. The implementation of this project can effectively solve the scientific problem of rapid combination rate of carriers in CdS photocatalyst, and its preparation method has high versatility and practicability in metal phosphide promoter.