Visible-light-driven iron-based heterogeneous photo-Fenton catalysts for wastewater decontamination: A review of recent advances

Qiangshun Wu; Muhammad Saboor Siddique; Huijuan Wang; Liqiang Cui; Hui Wang; Mei Pan; Jinlong Yan

doi:10.1016/j.chemosphere.2022.137509

Visible-light-driven iron-based heterogeneous photo-Fenton catalysts for wastewater decontamination: A review of recent advances

Chemosphere. 2023 Feb:313:137509. doi: 10.1016/j.chemosphere.2022.137509. Epub 2022 Dec 7.

Authors

Qiangshun Wu¹, Muhammad Saboor Siddique², Huijuan Wang³, Liqiang Cui⁴, Hui Wang⁴, Mei Pan⁴, Jinlong Yan⁵

Affiliations

¹ School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China. Electronic address: qswu@ycit.edu.cn.
² Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
³ School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
⁴ School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
⁵ School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China. Electronic address: yjlyt@ycit.cn.

PMID: 36495983
DOI: 10.1016/j.chemosphere.2022.137509

Abstract

Visible-light-driven heterogeneous photo-Fenton process has emerged as the most promising Fenton-derived technology for wastewater decontamination, owing to its prominent superiorities including the potential utilization of clean energy (solar light), and acceleration of ≡Fe(II)/≡Fe(III) dynamic cycle. As the core constituent, catalysts play a pivotal role in the photocatalytic activation of H₂O₂ to yield reactive oxidative species (ROS). To date, all types of iron-based heterogeneous photo-Fenton catalysts (Fe-HPFCs) have been extensively reported by the scientific community, and exhibited satisfactory catalytic performance towards pollutants decomposition, sometimes even exceeding the homogeneous counterparts (Fe(II)/H₂O₂). However, the relevant reviews on Fe-HPFCs, especially from the viewpoint of catalyst-self design are extremely limited. Therefore, this state-of-the-art review focuses on the available Fe-HPFCs in literatures, and gives their classification based on their self-characteristics and modification strategies for the first time. Two classes of representative Fe-HPFCs, conventional inorganic semiconductors of Fe-containing minerals and newly emerging Fe-based metal-organic frameworks (Fe-MOFs) are comprehensively summarized. Moreover, three universal strategies including (i) transition metal (TMs) doping, (ii) construction of heterojunctions with other semiconductors or plasmonic materials, and (iii) combination with supporters were proposed to tackle their inherent defects, viz., inferior light-harvesting capacity, fast recombination of photogenerated carriers, slow mass transfer and low exposure and uneven dispersion of active sites. Lastly, a critical emphasis was also made on the challenges and prospects of Fe-HPFCs in wastewater treatment, providing valuable guidance to researchers for the reasonable construction of high-performance Fe-HPFCs.

Keywords: Degradation; Inorganic mineral semiconductors; Metal-organic frameworks; Modification strategies; ≡Fe(II)/≡Fe(III) cycle.

Publication types

Review

MeSH terms

Catalysis
Decontamination
Ferrous Compounds
Hydrogen Peroxide / chemistry
Iron* / chemistry
Wastewater*

Substances

Iron
Wastewater
Hydrogen Peroxide
Ferrous Compounds