Herein, ZnO/CdS hierarchical composite was prepared through a hydrothermal and chemical bath deposition (CBD) process. Its photocatalytic H₂-production performance was tested. Mass ratio of CdS acted a pivotal part in light absorption and photocatalytic properties. Noticeably, promoted photocatalytic H₂-production activity of 4134 μmol g⁻¹ h^-1 was achieved by the sample with optimal CdS content. Significantly, the photoluminescence (PL) detection of hydroxyl radicals, as well as the in-situ XPS measurements was selected to verify the direct Z-scheme charge migration mechanism. This mechanism endowed the composite with strong capability for hydrogen evolution and elucidated the improved photocatalytic performance. The improvement of photocatalytic activity was due to hierarchical structure, extended visible light response and direct Z-scheme mechanism. This work will give an innovative vision in constructing direct Z-scheme photocatalytic system with great photocatalytic H₂-production activity.

本文中，通过水热化学浴沉积（CBD）工艺制备了ZnO / CdS分层复合材料。测试了其光催化H _2的生产性能。CdS的质量比在光吸收和光催化性能中起关键作用。明显地，具有最佳CdS含量的样品实现了4134μmolg ^-1  h ^-1的促进的光催化H _2产生活性。重要的是，可以对羟基自由基进行光致发光（PL）检测以及原位检测选择XPS测量以验证直接Z方案电荷迁移机制。这种机理赋予了复合材料强大的析氢能力，并阐明了改进的光催化性能。光催化活性的提高归因于分层结构，扩展的可见光响应和直接的Z方案机制。这项工作将为构建具有良好光催化H _2产生活性的直接Z方案光催化系统提供创新的视野。