Assembling the composition synergism and structure adjustment to efficiently accelerate the charge transfer and separation, is emerging as a promising strategy for advanced photocatalytic H₂ evolution. Herein, an efficient ZnO/CdS/MoS₂ photocatalyst with similar componments crystal structures and integrated S-scheme heterojunction and cocatalyst effects, was constructed to synergistically promote the photocatalytic H₂ evolution of CdS. The optimized ZnO/CdS/MoS₂ heterojunction with an MoS₂ mass ratio of 6 wt% (ZCM-3) revealed the highest H₂ evolution rate of 10247.4 μmol g⁻¹h⁻¹, 30.7-fold and 3.0-fold higher than that of bare CdS (323.5 μmol g⁻¹h⁻¹) and optimized ZnO/CdS (3400.8 μmol g⁻¹h⁻¹), respectively. Moreover, the slight change in H₂ production activities and retained crystal structures after five consecutive cycles indicate the stability of the photocatalyst. Detailed experimental results and DFT calculation elucidated that the substantially boosted photocatalytic performance was originated not only from the fast electron transfer and separation through the intimate contact, but also the synergistic effect between the S-scheme and cocatalyst. A possible mechanism was speculated based on the results, which can enriche the research for S-scheme heterojunction photocatalytic system and provide new insights for the design of efficient H₂ production photocatalyst.

组装组成的协同作用和结构调整以有效地加速电荷转移和分离，正成为一种先进的光催化H ₂放出的有前途的策略。本文中，构建了具有相似组成晶体结构和集成的S方案异质结和助催化剂作用的高效ZnO / CdS / MoS ₂光催化剂，以协同促进CdS的光催化H ₂演化。MoS ₂质量比为6 wt％（ZCM-3）的优化ZnO / CdS / MoS ₂异质结显示出最高的H ₂析出速率10247.4μmolg ^-1 h ^-1分别比裸CdS（323.5μmolg ^-1 h ^-1）和优化的ZnO / CdS（3400.8μmolg ^-1 h ^-1）高30.7倍和3.0倍。此外，H ₂的微小变化连续五个循环后的生产活动和保留的晶体结构表明了光催化剂的稳定性。详细的实验结果和DFT计算表明，显着提高的光催化性能不仅源于通过紧密接触而实现的快速电子转移和分离，还源于S方案与助催化剂之间的协同作用。根据结果​​推测了一种可能的机制，可以丰富对S型异质结光催化体系的研究，并为高效H ₂生产光催化剂的设计提供新的见解。