Abstract
Enhanced oxygen vacancy (VO) has been designated as an effective strategy to prepare high-performance MnO2 nanocatalysts for the oxidation of volatile organic compounds (VOC) for thereof unbalanced electronic structure, and rapid electron transfer which may even reduce the reaction temperature down to room temperature. Herein, the effects of the VO on the catalytic performance of nano-sized MnO2 were discussed by classifying the VO into surface-anchored and bulk-involved ones. Currently used introducing and modulating methods for VO including elemental doping, energetic particle bombardment, atmosphere heat treatment, mechanical chemistry, and redox methods are detailly reviewed. Corresponding regulating mechanisms for VO are expounded. Commonly used characterization methods including ESR, XPS, HRTEM, and UV-vis are reviewed. Furtherly, the unveiled question which is highly expected to be answered on VO of MnO2 nanocatalysts is proposed. The purpose of this review is to present the current status of research on MnO2 nanoparticles and to provide researchers with basic research ideas.
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This work is supported by the Department of Education of Guangdong Province (2019GZDXM006).
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YaHui Zhou wrote the main manuscript text and others prepared Figs. 1, 2, 3, 4, 5, 6, 7 and 8. All authors reviewed the manuscript.
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Zhou, Y.H., Lei, X.X., Zhou, J.Y. et al. Recent Advances in the Regulation of Oxygen Vacancies in MnO2 Nanocatalysts. Catal Surv Asia 27, 319–331 (2023). https://doi.org/10.1007/s10563-023-09402-1
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DOI: https://doi.org/10.1007/s10563-023-09402-1