基于氧空位构筑路易斯酸碱位点及其在环境光催化中的应用
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1.中国地质大学(北京)材料科学与工程学院,非金属矿物与固废资源材料化利用北京市重点实验室;2.清华大学环境学院水质与水生态研究中心

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国家自然科学基金(No. 51978372)


Constructing Lewis acid-base sites based on oxygen vacancies and their application in environmental photocatalysis
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1.School of Materials Science and Technology, China University of Geosciences,Beijing;2.Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes;3.Center for Water and Ecology,School of Environment, Tsinghua University

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National Natural Science Foundation of China (No. 51978372)

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    摘要:

    近年来,越来越多的科研工作者试图将催化活性与催化剂中氧空位的酸碱性联系起来,通过结合路易斯酸碱活性位点对氧空位缺陷在确定催化特性和电荷载流子动力学中所起作用的深入理解,可以为合理开发更有效的催化剂提供有价值的见解。氧空位是过渡金属氧化物中最常见的缺陷,含氧空位的催化剂与表面酸碱性如何影响反应物、中间体和固体表面产物的吸附、反应和解吸过程密切相关。为此,氧空位位置和氧空位的酸碱性在多相催化的历史中一直起着核心作用,多相催化剂的表面性质将在很大程度上决定表面活性位点的电子结构,从而显著影响其相应的催化效率、稳定性和化学选择性,研究基于氧空位缺陷构建路易斯酸碱位点的催化剂,对于各类分子活化、催化转化反应的性能提升具有重要意义。本文以含氧空位的固体催化剂为研究对象,对关于氧空位构筑路易斯酸碱位点的研究进行综述,并总结了其在光催化领域中的相关应用。

    Abstract:

    In recent years, an increasing number of researchers have attempted to link catalytic activity to the acidity and basicity of the oxygen vacancies in catalysts. A deeper understanding of the role played by oxygen vacancy defects in determining catalytic properties and charge carrier dynamics by combining Lewis acid-base active sites can provide valuable insights for the rational development of more efficient catalysts. Oxygen vacancies are the most common defect in transition metal oxides, and catalysts containing oxygen vacancies are closely related to how surface acidity and basicity affect the adsorption, reaction, and desorption processes of reactants, intermediates, and solid surface products. To this end, the location of oxygen vacancies and the acid-base of oxygen vacancies have always played a central role in the history of multiphase catalysis, and the surface properties of multiphase catalysts will largely determine the electronic structure of the surface active sites, thus significantly affecting their corresponding catalytic efficiency, stability, and chemoselectivity. The study of the construction of Lewis acid-base sites based on oxygen vacancy defects in catalysts is of great significance for the performance enhancement of various molecular activation and catalytic conversion reactions. In this paper, we review the research on oxygen vacancy-containing solid catalysts for the construction of Lewis acid-base sites and summarize their relevant applications in environmental catalysis. This paper is a review of the research on the oxygen vacancy-containing solid catalysts for the construction of Lewis acid-base sites and summarizes their relevant applications in the field of photochemical catalysis.

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  • 收稿日期:2022-07-13
  • 最后修改日期:2022-09-29
  • 录用日期:2022-09-30
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