Formation of Fe(IV) over a wide pH range via iron-carbon composite-catalyzed persulfate activation

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成果类型：

期刊论文

作者：

Li, Hong;Qiu, Rongliang;Tang, Yetao;Duan, Xiaoguang;Gu, Yanling;...

通讯作者：

Tan, Xiaofei(tanxf@hnu.edu.cn)

作者机构：

[Li, Hong; Tan, Xiaofei; Chen, Qiang; Xiang, Ling; Shu, Zihan; Yang, Hailan] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.

[Li, Hong; Tan, Xiaofei; Chen, Qiang; Xiang, Ling; Shu, Zihan; Yang, Hailan] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Peoples R China.

[Tang, Yetao; Qiu, Rongliang] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Peoples R China.

[Qiu, Rongliang] South China Agr Univ, Coll Nat Resources & Environm, Guangdong Prov Key Lab Agr & Rural Pollut Abatemen, Guangzhou 510642, Peoples R China.

[Tang, Yetao] Sun Yat Sen Univ, Guangdong Prov Key Lab Environm Pollut Control & R, Guangzhou 510275, Peoples R China.

通讯机构：

[Xiaofei Tan] C

College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China

语种：

英文

关键词：

Low -temperature pyrolysis;Iron -carbon composites;Persulfate;High-valent iron;Potassium butyl xanthate

期刊：

Chemical Engineering Journal

ISSN：

1385-8947

年：

2023

卷：

461

页码：

141951

DOI：

10.1016/j.cej.2023.141951

基金类别：

National Key R & D Program of China [2020YFC1807600]; National Natural Science Foundation of China [U20A20323, 52000012]; Natural Science Foundation of Hunan Province, China [2021JJ30123, 2022JJ20009, 2021JJ40578]; Science and Technology Inno- vation Program of Hunan Province [2022RC1122]

机构署名：

本校为其他机构

院系归属：

材料科学与工程学院

摘要：

Fe(IV) is typically formed under acidic or neutral conditions while its formation mechanism and impacts on pollutant decomposition have been overlooked, particularly in persulfate (PS) systems. In this study, an iron-carbon composite (Fe-BC250) was prepared at a low-temperature (250 °C) to explore the PS activation and Fe(IV) formation processes under a wide range of pH conditions. Fe(IV) was the main reactive species in the iron-carbon composite/PS system, and Fe species promoted the graphitization of biochars. The existence of Fe(IV) in the ...

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Formation of Fe(IV) over a wide pH range via iron-carbon composite-catalyzed persulfate activation

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