It makes sense to complete element regulation, formation of heterojunction and load of co-catalyst at the same time to improve photocatalytic hydrogen evolution. For this purpose, MnS/Mn_0.3Cd_0.7S heterojunction modified with NiS co-catalyst was prepared by a simple in-situ one-step method firstly. Based on this solvothermal method, CdS nanorods not just possess wider light absorbance range by the regulation of element. The charge separation of CdS is improved and recombination rate of electron-hole pairs is also decreased ascribed to the forming process of heterojunction and load of co-catalyst. In our work, the brand-new photocatalyst demonstrates optimal photocatalytic hydrogen evolution rate (33.4 mmol g⁻¹ h ^-1) under visible light irradiation (λ > 420 nm) which is almost 25.7 times higher than pristine CdS nanorods. This might enlighten a novel way to obtain hydrogen energy efficiently.

同时完成元素调控、异质结的形成和助催化剂的负载以改善光催化析氢是有意义的。为此，首先通过简单的原位一步法制备了用 NiS 助催化剂改性的MnS/Mn _0.3 Cd _0.7 S 异质结。基于这种溶剂热法，CdS纳米棒不仅通过元素的调节具有更宽的光吸收范围。由于异质结的形成过程和助催化剂的负载，CdS的电荷分离得到改善，电子-空穴对的复合率也降低。在我们的工作中，全新的光催化剂表现出最佳的光催化析氢速率（33.4 mmol g ^-1 h ^-1) 在可见光照射下 (λ > 420 nm)，几乎是原始 CdS 纳米棒的 25.7 倍。这可能会启发一种有效获取氢能的新方法。