Constructing compact heterostructures proves to be a productive approach to achieving charge separation and photocatalytic efficiency. However, the stochastic nature of the interface orientation and lattice mismatch in an apparently compact heterostructure often misleads carrier migration and molecular activation in the interface. Here, the S defect-enriched ZnIn₂S₄–CdIn₂S₄ compact heterojunctions were prepared for photocatalytic H₂O₂ production. Notably, this study utilized only water and oxygen as raw materials without additional reagents, achieving a H₂O₂ yield of 843.02 μmol g^–1 h^–1. A plethora of experimental results substantiate that the existence of internal stress initiates a restructuring of the interwoven interface and surface misfit dislocation networks. On the one hand, interfacial coherency establishes a central carrier transmission channel to significantly mitigate the charge transfer resistance caused by vacancies. Furthermore, interfacial coherency induces a surface structural reconstruction to enhance the polarization and adsorption of O₂, as well as reduce the reaction activation energy. Our findings offer valuable insights into the underlying mechanism governing surface activity through heterojunctions and uncover the relationship between the compacted interface and vacancies.

中文翻译：

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紧凑型 ZnIn2S4–CdIn2S4 异质结中的协同界面重构和表面极化，用于增强光催化 H2O2 生产


构建紧凑的异质结构被证明是实现电荷分离和光催化效率的有效方法。然而，表面致密的异质结构中界面取向和晶格失配的随机性质常常会误导界面中的载流子迁移和分子激活。这里，制备了富S缺陷的ZnIn ₂ S ₄ –CdIn ₂ S ₄ 致密异质结用于光催化H ₂ O ₂ 生产。值得注意的是，本研究仅使用水和氧气作为原料，无需额外试剂，H ₂ O ₂ 产率达到 843.02 μmol g ^–1 h ^–1 。大量的实验结果证实，内应力的存在引发了交织界面和表面失配位错网络的重组。一方面，界面相干性建立了中心载流子传输通道，显着减轻了空位引起的电荷传输阻力。此外，界面相干性诱导表面结构重构，增强 O ₂ 的极化和吸附，并降低反应活化能。我们的研究结果为通过异质结控制表面活性的潜在机制提供了有价值的见解，并揭示了致密界面和空位之间的关系。