一锅 MOFs 封装衍生的 In 掺杂 ZnO@In2O3 混合光催化剂用于增强可见光驱动的光催化析氢,Advanced Sustainable Systems

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一锅 MOFs 封装衍生的 In 掺杂 ZnO@In2O3 混合光催化剂用于增强可见光驱动的光催化析氢
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2022-12-09 , DOI: 10.1002/adsu.202200443
Hongli Yang _{1,

2} , Junlun Gao ₁ , Man Yang ₁ , Huilin Hou ₁ , Fengmei Gao ₁ , Yong Luo _{2,

3} , Weiyou Yang ₁

Affiliation

可见光诱导光催化剂的开发是至关重要的问题之一，因为它为太阳能转换提供了一条绿色和可持续的途径。在此，In-doped ZnO@In ₂ O ₃杂化光催化剂是通过单锅金属有机骨架（MOFs）-包封衍生方法设计和构建的。通过在可见光照射下的光催化析氢，系统地研究了样品光催化剂的光催化活性。还控制混合光催化剂的组成以找到最佳的光催化活性。有趣的是，使用可见光照射源，优化的 In-doped ZnO@In ₂ O ₃光催化剂显示出 H ₂^{417 µmol∙g −1} ∙h ⁻¹的释放速率，比 In 掺杂 ZnO 样品高出近 20 倍，也超过了迄今为止报道的大多数 ZnO 基催化剂。增强的催化性能归因于增强的可见光响应和增强的电荷分离效率，这是通过电子俘获 In 掺杂和供电子 In 2 O 3 偶联的协同_效应实现_的。这项工作为制造 MOFs 封装衍生的可见光驱动复合材料提供了一条有前途的途径，以实现对析氢的高光催化性能。

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One-Pot MOFs-Encapsulation Derived In-Doped ZnO@In2O3 Hybrid Photocatalyst for Enhanced Visible-Light-Driven Photocatalytic Hydrogen Evolution

The development of visible-light-induced photocatalysts is one of the critically important issues because it offers a green and sustainable route for solar energy conversion. Herein, In-doped ZnO@In₂O₃ hybrid photocatalysts are designed and constructed through a one-pot metal-organic frameworks (MOFs)-encapsulation-derived method. The photocatalytic activity of the sample photocatalysts is systematically investigated by photocatalytic hydrogen evolution under visible light irradiation. The composition of the hybrid photocatalysts is also controlled to find the best photocatalytic activities. Interestingly, using a visible-light irradiation source, the optimized In-doped ZnO@In₂O₃ photocatalyst shows an H₂ evolution rate of 417 µmol∙g⁻¹∙h⁻¹, which is nearly 20 times higher than that of the In-doped ZnO sample and also exceeds most ZnO-based catalysts ever reported. The enhanced catalytic performance is ascribed to the increased visible-light response and enhanced charge separation efficiency by the synergistic effects of electron-trapped In doping and electron-donated In₂O₃ coupling. This work presents a promising pathway for fabricating MOFs-encapsulation derived visible-light-driven composites for high photocatalytic performance towards hydrogen evolution.

更新日期：2022-12-09

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