Oxygen vacancies in a catalyst for VOCs oxidation: synthesis, characterization, and catalytic effects,Journal of Materials Chemistry A

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Oxygen vacancies in a catalyst for VOCs oxidation: synthesis, characterization, and catalytic effects
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-06-16 , DOI: 10.1039/d2ta03180a
Yanfei Zheng _{1,

2} , Kaixuan Fu _{1,

2} , Zhihao Yu _{1,

2} , Yun Su _{1,

2} , Rui Han _{1,

2} , Qingling Liu _{1,

2}

Affiliation

Volatile organic compounds (VOCs), as a significant contributor to atmospheric pollution such as ozone pollution and PM_2.5, bring about serious harm to the environment and human health. Catalytic oxidation is one of the most promising technologies for achieving efficient VOCs removal, and the low-temperature performance of catalysts affects the removal efficiency. With the ongoing understanding of the catalytic reaction mechanism, oxygen vacancies can activate oxygen molecules, enhance electron transport, and regulate the surface chemical properties of catalysts, which has become one of the most effective means to improve catalytic performance. However, there has not been a detailed review of oxygen vacancy engineering for VOCs oxidation. This work systematically presented the recent progress regarding oxygen defect engineering in designing novel catalytic materials for VOCs treatment to fill in the gaps. Specifically, the core concerns in this review mainly concentrate on the in-depth discussion of the construction strategy, structural characterization, and catalytic effects of oxygen vacancies. Additionally, the technical challenges and prospects were forecasted. The perspectives provided in this review could potentially contribute to guiding the controllable synthesis of efficient catalysts for VOCs degradation and its corresponding mechanism understanding.

中文翻译：

VOCs 氧化催化剂中的氧空位：合成、表征和催化效果

挥发性有机化合物 (VOC)，是造成臭氧污染和 PM _{2.5等大气污染的重要因素}，给环境和人体健康带来严重危害。催化氧化是实现高效去除VOCs最有前途的技术之一，催化剂的低温性能影响去除效率。随着对催化反应机理的不断了解，氧空位可以激活氧分子，增强电子传输，调节催化剂的表面化学性质，已成为提高催化性能的最有效手段之一。然而，目前还没有对 VOCs 氧化的氧空位工程进行详细审查。这项工作系统地介绍了氧缺陷工程在设计用于 VOCs 处理的新型催化材料以填补空白方面的最新进展。具体来说，本综述的核心关注点主要集中在对氧空位的构建策略、结构表征和催化作用的深入讨论。此外，预测了技术挑战和前景。本综述提供的观点可能有助于指导 VOCs 降解高效催化剂的可控合成及其相应机理的理解。

更新日期：2022-06-16

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