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Complexes of Fe(III)-organic pollutants that directly activate Fenton-like processes under visible light

Title
Complexes of Fe(III)-organic pollutants that directly activate Fenton-like processes under visible light
Authors
Yin, RenliChen, YanxiHu, JiayueLu, GangZeng, LixiChoi, WonyongZhu, Mingshan
Date Issued
Apr-2021
Publisher
ELSEVIER
Abstract
The major challenge of Fenton and Fenton-like technologies is promoting the effective transformation of Fe3+ to Fe2+. Photoinduced ligand-to-metal charge transfer (LMCT) enables charge to transfer effectively from the complex ligand to metal ions for the subsequent redox reactions. This study shows that photoactivated LMCTs relying on internal charge transfers occurred from the pollutant complex to the Fe3+ center and followed the in situ transformation of Fe3+ to Fe2+ without the addition of other ligands or agents. Using the antibiotic pollutant sulfamethoxazole (SMX), a direct Fe-SMX complex is formed and enables visible light to be used to activate peroxydisulfate (PDS) by Fe3+ for the rapid degradation of SMX at a rate 6.5-times higher than that observed by the conventional Fe2+/PDS system. This study outlines a new and cost-effective LMCT activation approach and broadens our knowledge of the ability of Fe3+ to be applied in Fenton-like reactions for environmental remediation.
URI
http://oasis.postech.ac.kr/handle/2014.oak/104989
ISSN
0926-3373
Article Type
Article
Citation
APPLIED CATALYSIS B-ENVIRONMENTAL, vol. 283, page. 119663, 2021-04
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최원용CHOI, WONYONG
Div of Environmental Science & Enginrg
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