文献类型： 外文期刊

作者： Chen, Cheng ¹ ; Wang, Yongyi ¹ ; Huang, Yajing ¹ ; Hua, Jian ² ; Qu, Wei ¹ ; Xia, Dehua ¹ ; He, Chun ¹ ; Sharma, Virender K. ³ ; Shu, Dong ⁴ ;

作者机构： 1.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control & R, Guangzhou 510275, Peoples R China

2.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated C, Guangzhou 510640, Peoples R China

3.Texas A&M Univ, Sch Publ Hlth, Dept Occupat & Environm Hlth, College Stn, TX 77843 USA

4.South China Normal Univ, Guangdong Univ, Sch Chem, Key Lab Technol Electrochem Energy Storage & Power, Guangzhou 510006, Peoples R China

关键词： Self-catalysis; Fe(III); Fe(II) redox cycling; Fe(III) hydroperoxide complex; Fenton-like reaction; Phenolic pollutants

期刊名称：APPLIED CATALYSIS B-ENVIRONMENTAL （ 影响因子：22.1； 五年影响因子：19.7 ）

ISSN： 0926-3373

年卷期： 2023 年 321 卷

页码：

收录情况： SCI

摘要： Applications of Fenton-like reactions (Fe(III)/H2O2) without catalyst have low efficiency in remediating pollutants. Herein, pollutants containing phenolic moiety (P, e.g., paracetamol (PCM)) were demonstrated to make Fe(III)/H2O2 system highly effective in degrading a wide range of contaminants. Kinetics analysis shows the selfcatalytic degradation of PCM with optimum performance at pH 4.0, and Fe(III)/Fe(II) conversion was accelerated without the assistance of cocatalyst. Based on state-of-art spectroscopy measurements and theoretical calculations, the overlooked self-catalytic mechanism was revealed. In the presence of phenolic moiety, a yellowcolored high-spin P-Fe(III)-OOH complex can be formed in Fe(III)/H2O2 system, which subsequently converts to Fe(II). Afterwards, the oxidation of P gives hydroquinone that also facilitates the cycling of Fe(III)/Fe(II). The accumulated Fe(II) reacts with H2O2 to generate hydroxyl radicals, the major species responsible to oxidize pollutants, thereby achieving efficient decontaminant performance. Results provide new insights into the selfcatalytic Fenton-like process for remediating a mixture of pollutants.