Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
Environ Sci Technol. 2021 Apr 20;55(8):4268-4286. doi: 10.1021/acs.est.0c08179. Epub 2021 Mar 15.
Volatile organic compounds (VOCs) are one of the main sources of air pollution, which are of wide concern because of their toxicity and serious threat to the environment and human health. Catalytic oxidation has been proven to be a promising and effective technology for VOCs abatement in the presence of heat or light. As environmentally friendly and low-cost materials, manganese-based oxides are the most competitive and promising candidates for the catalytic degradation of VOCs in thermocatalysis or photo/thermocatalysis. This article summarizes the research and development on various manganese-based oxide catalysts, with emphasis on their thermocatalytic and photo/thermocatalytic purification of VOCs in recent years in detail. Single manganese oxides, manganese-based oxide composites, as well as improving strategies such as morphology regulation, heterojunction engineering, and surface decoration by metal doping or universal acid treatment are reviewed. Besides, manganese-based monoliths for practical VOCs abatementare also discussed. Meanwhile, relevant catalytic mechanisms are also summarized. Finally, the existing problems and prospect of manganese-based oxide catalysts for catalyzing combustion of VOCs are proposed.
挥发性有机化合物（VOCs）是空气污染的主要来源之一，由于其毒性和对环境及人类健康的严重威胁，引起了广泛关注。在有热或光存在的情况下，催化氧化已被证明是一种很有前途和有效的 VOCs 减排技术。作为环保且低成本的材料，锰基氧化物是在热催化或光/热催化中催化降解 VOCs 最具竞争力和最有前途的候选材料之一。本文总结了各种锰基氧化物催化剂的研究与开发，重点详细介绍了近年来在 VOCs 的热催化和光/热催化净化方面的研究进展。综述了单锰氧化物、锰基氧化物复合材料以及通过金属掺杂或通用酸处理进行形貌调控、异质结工程和表面修饰等改进策略。此外，还讨论了用于实际 VOCs 减排的锰基整体式催化剂。同时，还总结了相关的催化机制。最后，提出了用于催化 VOCs 燃烧的锰基氧化物催化剂存在的问题和展望。
