Nonradical oxidation processes in PMS-based heterogeneous catalytic system: Generation, identification, oxidation characteristics, challenges response and application prospects

[Display omitted] •The nonradical mechanisms in PMS-based heterogeneous catalytic system were arranged.•The evolutionary pathways were summarized and analyzed.•Common identification methods were summarized and evaluated.•Nonradical exhibited its unique oxidation advantages.•Nonradical has extensive...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 410; p. 128312
Main Authors: Zhou, Xinquan, Zhao, Qindi, Wang, Jia, Chen, Zhulei, Chen, Zhuqi
Format: Journal Article
Language:English
Published: Elsevier B.V 15.04.2021
Subjects:
Characteristics
Evolution mechanism
Heterogeneous catalysis
Nonradical
Peroxymonosulfate
Heterogeneous catalysis
Nonradical
Evolution mechanism
Peroxymonosulfate
Characteristics
ISSN:1385-8947, 1873-3212
Online Access:Get full text
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Summary:[Display omitted] •The nonradical mechanisms in PMS-based heterogeneous catalytic system were arranged.•The evolutionary pathways were summarized and analyzed.•Common identification methods were summarized and evaluated.•Nonradical exhibited its unique oxidation advantages.•Nonradical has extensive application prospect in environmental remediation. Recently, various nonradical oxidation mechanisms different from traditional free radicals have been discovered in peroxymonosulfate (PMS)-based heterogeneous catalytic system. These nonradical oxidation mechanisms have given rise to much controversy in many aspects due to their variety and complex evolutionary pathways. In this paper, we systematically summarized and compared these nonradical oxidation mechanisms. Mainly including the evolutionary pathways, identification methods (qualitative and quantitative), and oxidation characteristics. Moreover,the challenges and strategies for the further development of these oxidation mechanisms, as well as the research and application prospects are proposed. Our work can deepen systematic understanding of the nonradical oxidation mechanism among relevant researchers, and provides some enlightenment for using nonradical oxidation mechanism to deal with the environmental crisis.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2020.128312