Yuan Chunyu, Yin Hongfei, Li Jing, Zhang Yuxi, Chen Hongji, Xiao Dongdong, Wang Qizhao, Zhang Yongzheng, Xue Qi-Kun
School of Physics and Physical Engineering, Qufu Normal University, Qufu, China.
College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China.
Nat Commun. 2025 Jul 18;16(1):6607. doi: 10.1038/s41467-025-62033-0.
Photocorrosion triggered by the unconsumed photogenerated holes severely deteriorates the photocatalytic efficiency and stability of semiconductor photocatalysts, especially in seawater with complex ions. Here, we report a hierarchical hollow ZnInS heterostructure integrating an inner CoO nanocage and atomically dispersed Pt anchoring at surface S vacancies for hydrogen evolution from natural seawater (23.88 mmol g h) and pure water (48.99 mmol g h) under visible light. The dynamic Co/Co self-reconstruction of the inner CoOx cage effectively consumes photogenerated holes, while the outer Pt single atoms localized at S vacancies serve as electron sinks to facilitate electron extraction and proton reduction. Benefiting from the dynamic hole-scavenging mechanism via oxidation self-reconstruction, the Pt-ZnInS@CoO photocatalyst exhibits enhanced durability against alkali metal ions in seawater and maintains high reactivity for long-term hydrogen evolution. This work underscores the importance of light-induced transition metal dynamic self-reconstruction within hierarchical hollow heterostructure photocatalysts for sustainable hydrogen evolution.
未消耗的光生空穴引发的光腐蚀严重降低了半导体光催化剂的光催化效率和稳定性，尤其是在含有复杂离子的海水中。在此，我们报道了一种分级中空的ZnInS异质结构，其集成了内部的CoO纳米笼和锚定在表面S空位处的原子分散的Pt，用于在可见光下从天然海水（23.88 mmol g h）和纯水中析氢（48.99 mmol g h）。内部CoOx笼的动态Co/Co自重构有效地消耗了光生空穴，而位于S空位处的外部Pt单原子作为电子阱促进电子提取和质子还原。得益于通过氧化自重构的动态空穴清除机制，Pt-ZnInS@CoO光催化剂对海水中的碱金属离子表现出增强的耐久性，并在长期析氢过程中保持高反应活性。这项工作强调了分级中空异质结构光催化剂中光诱导过渡金属动态自重构对于可持续析氢的重要性。
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