Confinement Effect and Application in Catalytic Oxidation–Reduction Reaction of Confined Single-Atom Catalysts

IF 13.1 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-08-15 DOI:10.1021/acscatal.4c02113

Xiu Fan, Donghao Li, Yuanxiang Shu, Yimeng Feng, Fengxiang Li

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引用次数: 0

Abstract

Single-atom catalysts (SACs) exhibit remarkable 100% atomic economy, making them highly efficient in various fields, including production processes, energy systems, and environmental remediation. However, the migration and agglomeration of single atoms significantly diminish reactivity and increase the operating cost of the catalyst. Due to the size effect, the space confinement effect, and the electron confinement effect, the single atoms are stabilized, and overall catalytic performance is also improved. The confinement effect can be enhanced by modifying the supporting materials with ordered and regular pore structures and improving the binding mode between the support and the single atom. In this Review, the confined functional structure will be explained for the synthesis of confined SACs. It elucidates mechanisms for the formation of the confinement effect and elaborates how the confinement effect improves catalytic performance. This Review is helpful for better understanding, controlling, and utilizing the confinement effect to design confined SACs with impressive catalytic performance.

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封闭效应及其在封闭单原子催化剂催化氧化还原反应中的应用

单原子催化剂（SAC）具有显著的 100% 原子经济性，因此在生产工艺、能源系统和环境修复等多个领域都具有很高的效率。然而，单原子的迁移和聚集会大大降低催化剂的反应活性，增加催化剂的运行成本。由于尺寸效应、空间束缚效应和电子束缚效应，单原子得到了稳定，整体催化性能也得到了改善。通过改性具有有序和规则孔隙结构的支撑材料，以及改善支撑材料与单原子之间的结合模式，可以增强禁锢效应。在本综述中，将解释用于合成封闭 SAC 的封闭功能结构。它阐明了封闭效应的形成机制，并阐述了封闭效应如何改善催化性能。本综述有助于更好地理解、控制和利用束缚效应，设计出具有出色催化性能的束缚 SAC。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.