文献类型：期刊文献

英文题名：Phenoxyl radical-mediated peroxymonosulfate activation for efficient water remediation

作者：Chen, Zhuan[1,2,3];Bao, Yan[1,2];Ran, Maoxi[4];Wang, Jiayi[1,2];Cao, Jiazhen[3];Jia, Daqing[3];Xing, Mingyang[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]Southwest Univ, Coll Resources & Environm, Dept Environm Sci & Engn, 2 Tiansheng Rd, Chongqing 400715, Peoples R China

年份：2026

卷号：297

外文期刊名：WATER RESEARCH

收录：;EI(收录号：20261020216639);WOS:【SCI-EXPANDED(收录号:WOS:001715035700001)】；

基金：This work was supported by the "National Key R & D Program of China" (No. SQ2024YFA1211001) , National Natural Science Foundation of China (No. 22325602, 22521201, 22506049) , Program of Shanghai Academic/Technology Research Leader (23XD1421000) , Program of Shanghai Academic/Technology Research (25ZR1402099) and the China Postdoctoral Science Foundation under Grant Number (2024M760914, 2025T180330 and GZB20250306) . Authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Advanced oxidation process; Phenoxyl radicals; Water remediation; Microenvironment; Metal oxide

摘要：Radicals are central to advanced oxidation processes (AOPs). However, the formation and role of organic radicals, particularly phenoxyl radicals, during the remediation of phenolic pollutants remain largely overlooked and misunderstood, often being considered as inactive byproducts or precursors to polymerization. Herein, we demonstrate that phenol spontaneously interacts with Co3O4 to form surface-stabilized phenoxyl radicals, which, contrary to conventional wisdom, do not directly degrade pollutants but predominantly act as essential mediators for activating peroxymonosulfate (PMS). Combined experimental and theoretical analyses reveal that the phenoxyl radicals facilitate the elongation of the O-O bond in PMS, thereby significantly lowering the activation barrier. Driven by this unique mediation, the system achieves a remarkable 65.2% enhancement in the pollutant degradation rate and a 70.8% increase in the PMS activation efficiency. The synergy between phenoxyl radicals and the ZnO-derived neutral microenvironment in designed Zn/Co composite oxide enables efficient pollutant degradation over a wide pH range with minimal cobalt leaching. Moreover, this synergy substantially improved the biodegradability of actual industrial wastewater. This work unveils a previously unrecognized but critical pathway in heterogeneous Fenton-like catalysis and provides a novel strategic paradigm for designing highly efficient and environmentally benign oxidation technologies.