Designing a heterojunction photocatalyst to improve the separation efficiency of photogenerated electrons and holes is of great significance to improve the hydrogen production efficiency. In this work, we report a rational design to grow ZnIn₂S₄ on Mo-MOF-derived N-doped C-coated MoO₂ (MOZIS), and it has excellent photocatalytic hydrogen production with triethanolamine (TEOA) as sacrificial agent. N-doped C improves the electron transport efficiency between MoO₂ and ZnIn₂S₄. The systematic study shows that MOZIS has good properties to promote the effective separation and transfer of photocatalytic charges, which is attributed to the tight contact interface and good energy band structure between MoO₂ and ZnIn₂S₄. The optimized nanocomposites have a high hydrogen production efficiency of 10.89 mmol·g⁻¹ (4 h) under visible light. MOF-derived N-doped C-coated MoO₂ is an effective strategy to improve the photocatalytic hydrogen production efficiency of ZnIn₂S₄.

Graphical abstract

中文翻译：

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N 掺杂 C 涂层 MoO2/ZnIn2S4 异质结用于高效光催化制氢

设计异质结光催化剂，提高光生电子和空穴的分离效率，对于提高制氢效率具有重要意义。在这项工作中，我们报告了一种在 Mo-MOF 衍生的 N 掺杂 C 包覆的 MoO ₂ (MOZIS) 上生长 ZnIn ₂ S ₄的合理设计，并且它以三乙醇胺 (TEOA) 作为牺牲剂具有出色的光催化制氢能力。_{N掺杂的C提高了MoO 2}和ZnIn ₂ S ₄之间的电子传输效率. 系统研究表明，MOZIS具有促进光催化电荷有效分离和转移的良好性能，这归因于MoO 2 和_ZnIn 2 _S 4_之间紧密的接触界面和良好的能带结构。优化后的纳米复合材料在可见光下的产氢效率高达10.89 mmol·g ^{−1 (4 h)。}MOF衍生的N掺杂C包覆MoO _{2是提高ZnIn 2} S ₄光催化产氢效率的有效策略。

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