文献类型：期刊文献

英文题名：In Situ Turning Pollutants Into Catalysts: A Phase-Transition Self-Catalysis Paradigm for Sustainable Water Treatment

作者：Zhang, Yayun[1];Cui, Lekang[1];Shi, Yaqin[1];Zhao, Yan[1];Yuan, Cong[2];Tian, Chengcheng[2,3];Cao, Jiazhen[1];Xing, Mingyang[1]

机构：[1]East China Univ Sci & Technol, Key Lab Green Chem Engn & Ind Catalysis, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China

年份：2026

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20262420893773);WOS:【SCI-EXPANDED(收录号:WOS:001790348100001)】；

基金：This work was financially supported by National Natural Science Foundation of China (no. 22325602, 22008073, 22478123, 22521201), Shanghai Sailing Program (no. 20YF1410600), Shanghai Talent Development Fund (2021026), Natural Science Foundation of Shanghai (24ZR1417200), and Fundamental and Interdisciplinary Disciplines Breakthrough Plan of the Ministry of Education of China (JYB2025XDXM404). 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：environment remediation; liquid-solid phase-transition; self-catalysis; synergistic removal

摘要：Decentralized water treatment is constrained by high chemical demand and rapid catalyst deactivation, limiting the low-carbon remediation of waters containing heavy metals and organic micropollutants. Herein, we report a phase-transition-driven self-catalytic strategy that converts metal pollutants in situ into active catalysts for integrated purification and valorization. In a representative Ni2+/phenol system, peroxymonosulfate (PMS) shifts the Ni2+ -><- Ni(OH)2 equilibrium toward NiOOH nanoparticle formation, which rapidly induces phenol polymerization and co-precipitation with residual Ni(OH)2. Consequently, phenol is completely removed, while Ni2+ decreases from 28 to 0.08 mg L-1 with ultralow PMS consumption. Mechanistic studies identify NiOOH as the reactive phase that oxidizes phenol to phenoxy radicals via proton-coupled electron transfer and proton transfer-electron transfer pathways. This strategy is highly effective for treating industrial phenolic wastewater and offers a modular platform adaptable to various metal ions (e.g., Co2+, Cu2+) and oxidants (e.g., NaClO, Peroxydisulfate). Combined with effective products recovery, it offers substantial economic and environmental advantages over existing methods. This work recasts pollutants from treatment targets into treatment agents, offering a fresh, and scalable route to sustainable water remediation.