Citation: Kunjie Hou, Peng Shen, Zhu Wang, Zhoujie Pi, Fei Chen, Xiaoming Li, Haoran Dong, Qi Yang. Revisiting the contribution of Fe^ⅣO²⁺ in Fe(Ⅱ)/peroxydisulfate system[J]. Chinese Chemical Letters, ;2023, 34(3): 107555. doi: 10.1016/j.cclet.2022.05.069 shu

Revisiting the contribution of Fe^ⅣO²⁺ in Fe(Ⅱ)/peroxydisulfate system

Kunjie Hou ^{a, b} ,
Peng Shen ^{a, b} ,
Zhu Wang ^{a, b} ,
Zhoujie Pi ^{a, b} ,
Fei Chen ^{c, *,} ,
Xiaoming Li ^{a, b} ,
Haoran Dong ^{a, b} ,
Qi Yang ^{a, b, *,}

a.
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
b.
Ministry of Education, Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Changsha 410082, China
c.
Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China

^**

fchen0505@cqu.edu.cn

yangqi@hnu.edu.cn

Received Date: 16 March 2022
Revised Date: 7 May 2022
Accepted Date: 22 May 2022
Available Online: 26 May 2022

Figures(3)

Recent studies have proposed that the high-valent iron species (such as Fe^ⅣO²⁺) rather than sulfate radical (SO₄^•−) and hydroxyl radical (^•OH) are the main reactive oxidant species (ROS) in Fe(Ⅱ)/peroxydisulfate (PDS) system with the methyl phenyl sulfoxide (PMSO) as the Fe^ⅣO²⁺ probe. However, many operational factors may interfere with the accuracy of this method, so the contribution of Fe^ⅣO²⁺ calculated by this method is controversial. In this study, the possible effect of Fe(Ⅱ) concentration, pollutant type, reducing agent, or coexisted anions on Fe^ⅣO²⁺ production and its corresponding contribution to the removal of target pollutants in the Fe(Ⅱ)/PDS system were investigated in detail, and the intrinsic mechanisms involved were also explored. This study shows that ROS generation is a complex process in the Fe(Ⅱ)/PDS system, and multiple combinatorial approaches are urgently required to deeply explore the contribution of ROS to the elimination of target contaminants.
- Methyl phenyl sulfoxide,
- Fe(Ⅱ)/PDS system,
- Reactive oxidative species,
- Fe^ⅣO²⁺,
- Probe
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沈阳化工大学材料科学与工程学院沈阳 110142

Revisiting the contribution of FeⅣO2+ in Fe(Ⅱ)/peroxydisulfate system

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通讯作者: 陈斌, bchen63@163.com

Revisiting the contribution of Fe^ⅣO²⁺ in Fe(Ⅱ)/peroxydisulfate system