Boosting Photogenerated Electrons Transfer from FeVO4 to Peroxymonosulfate via Cu Doping for Stable Degradation of Organic Contaminants

Comprehensive Summary Electron transfer is an important way to activate persulfate. Currently, the electrons for persulfate activation mainly originate from organic contaminants or the catalyst itself, which can lead to selective activation of persulfate or oxidation of the catalyst, respectively, a...

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Bibliographic Details
Published in:Chinese journal of chemistry 2024-12, Vol.42 (24), p.3201-3210
Main Authors: Zhong, Zhou, Liu, Xiang‐Ji, Ma, Li, Zhan, Zi‐Jian, Yuan, Yu‐Xin, Zhang, Heng‐Jian, Cai, Feng‐Ying, Hou, Yi‐Dong, Lü, Jian, Cao, Rong
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Contaminants
Cu doping
Degradation
Doping
Electron transfer
Electrons
Electrons transfer
Organic contaminants
Oxidation
Peroxymonosulfate activation
Photocatalysis
Photodegradation
Pollutant degradation
Stability
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Summary:Comprehensive Summary Electron transfer is an important way to activate persulfate. Currently, the electrons for persulfate activation mainly originate from organic contaminants or the catalyst itself, which can lead to selective activation of persulfate or oxidation of the catalyst, respectively, and thus become a bottleneck restricting its application. In this work, Cu−doped FeVO4 (Cu−FVO) was prepared, and the results showed that Cu doping can significantly improve the photocatalytic activity and stability of FVO for peroxymonosulfate (PMS) activation. The optimized Cu−FVO/PMS/light system exhibited a high BPA degradation rate that is 4.3 times higher than that of the FVO/PMS/light. This system manifested a broad applicability to various organic contaminants even with complex matrix. Photoelectrochemical analysis and DFT theoretical calculations revealed that Cu doping boosted the photogenerated charge separation and the adsorption of PMS on FVO. Furthermore, Cu doping led to the establishment of an electron transfer channel from Cu−FVO to PMS, through which photogenerated electrons achieved an efficient PMS activation. Meanwhile, holes were consumed by organic contaminants to avoid the oxidation of catalyst. These collectively enhanced the photocatalytic activity and stability of Cu−FVO, which also maintained high catalytic activity even after 20 cycling degradation reactions. Cu doping significantly improved the photocatalytic activity and stability of FeVO4 for peroxymonosulfate (PMS) activation, as it could boost the photogenerated electrons transferring to PMS and the adsorption of PMS on FeVO4
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.202400669