To solve the problem of energy shortage and environmental pollution, the construction of properly designed photocatalysts is a promising method. Here, UiO-66-(COOH)₂/ZnIn₂S₄ Z-scheme photocatalyst decorated with MoS₂ nanosheets was designed and constructed as a novel 3D hierarchical structure via hydrothermal methods. In this particular 3D hierarchical structure, the UiO-66-(COOH)₂ nanoparticles are decorated in the interweaving petal nanosheets of ZnIn₂S₄ microspheres, while the co-catalyst of MoS₂ is folded at the edge of these interweaving petals. The excellent heterojunctions with highly exposed catalytic active sites are correspondingly built, and the close interfacial interaction between UiO-66-(COOH)₂, MoS₂ and ZnIn₂S₄ create a stage for fast transfer of photogenerated electrons, which are both effective for the photocatalytic reaction process. Also, the Z-scheme charge-transfer process improves the oxidizability and reducibility between UiO-66-(COOH)₂ and ZnIn₂S₄. As a result, the optimized UiO-66-(COOH)₂/MoS₂/ZnIn₂S₄ photocatalyst exhibits excellent photocatalytic hydrogen production (18.794 mmolh^-1g^-1) and reduction of Cr(VI) (0.06850 min^-1) under simulated solar light irradiation, which are 15.3 and 6.7 times higher than that of bare ZnIn₂S₄, respectively, and also the prominent stability and excellent recyclability are obtained. This study provides new insights into the research on the Z-scheme system containing MOF components for growing energy and environmental demands.

为了解决能源短缺和环境污染的问题，设计适当的光催化剂是一种有前途的方法。在这里，设计了用MoS ₂纳米片装饰的UiO-66-（COOH）₂ / ZnIn ₂ S ₄ Z方案光催化剂，并通过水热法将其构造为新颖的3D分层结构。在此特定的3D层次结构中，UiO-66-（COOH）₂纳米颗粒被装饰在ZnIn ₂ S ₄微球交织的花瓣纳米片中，而MoS ₂的助催化剂被折叠在这些交织的花瓣的边缘。相应地建立了具有高度暴露的催化活性位点的优良异质结，UiO-66-（COOH）₂，MoS ₂和ZnIn ₂ S ₄之间的紧密界面相互作用为光生电子的快速转移创造了一个阶段，这两个阶段对光催化反应过程。而且，Z方案电荷转移过程改善了UiO-66-（COOH）₂与ZnIn ₂ S ₄之间的氧化性和还原性。结果，优化的UiO-66-（COOH）₂ / MoS ₂ / ZnIn ₂ S ₄在模拟太阳光照射下，该光催化剂显示出优异的光催化产氢量（18.794 mmolh ^-1 g ^-1）和Cr（VI）还原（0.06850 min ^-1），分别比裸露的ZnIn ₂ S ₄高出15.3倍和6.7倍，分别获得显着的稳定性和优异的可回收性。这项研究为包含MOF组件的Z方案系统的研究提供了新的见识，以满足不断增长的能源和环境需求。