Fe(III) Alleviates pH Dependence of Iron-based Bimetallic/PMS System for Organic Pollutant Oxidation

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成果类型：

期刊论文

作者：

Yuan, Chaowei;Li, Gefei;Ran, Maoxi;Yang, Wei;Shu, Pingyin;...

通讯作者：

Li, W

作者机构：

[Shu, Pingyin; Li, W; Li, Wei; Yuan, Chaowei; Yang, Wei] Chongqing Univ, Coll Environm & Ecol, Chongqing 400045, Peoples R China.

[Li, Gefei] Nanjing Forestry Univ, Coll Sci, Long Pan Rd 159, Nanjing 210037, Peoples R China.

[Ran, Maoxi] Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China.

[Long, Xizi] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hunan Key Lab Typ Environm Pollut & Hlth Hazards, Hengyang 421001, Peoples R China.

[Li, Wei] Chongqing Univ, Coll Environm & Ecol, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China.

通讯机构：

[Li, W ] C

Chongqing Univ, Coll Environm & Ecol, Chongqing 400045, Peoples R China.

语种：

英文

关键词：

Peroxymonosulfate activation;Bimetallic spinel;PH;Fe(III);Anti-interference;Iron sludge

期刊：

Applied Catalysis B: Environmental

ISSN：

0926-3373

年：

2025

卷：

366

页码：

125002

DOI：

10.1016/j.apcatb.2024.125002

基金类别：

National Natural Science Foundation of China [31700401, U20A20326]

机构署名：

本校为其他机构

院系归属：

公共卫生学院

摘要：

This work delves into the mechanism enabling pH interference resistance in iron-based bimetallic oxides within the peroxymonosulfate (PMS) system. We employed MnFe₂O₄ spinel oxides as a catalyst for an in-depth comparison with monometallic analogs. We discovered that Fe(III) sites within the bimetallic oxide serve as sacrificial sites for hydroxyl ions as pH rises, stabilizing the cycling of active Mn sites. Elevated pH promotes the formation of surface hydroxyl groups, which enhance PMS and phenol adsorption via hydrogen bonding, thereby fac...

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Fe(III) Alleviates pH Dependence of Iron-based Bimetallic/PMS System for Organic Pollutant Oxidation

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