Cu9S5 and Cu9S5@UiO-66-NH2 composites exhibit excellent Fenton-like photocatalytic activities for the degradation of organic contaminants

The development of advanced catalysts is essential for efficient elimination of the emerging organic pollutants in water. Herein, Cu9S5 and Cu9S5@UiO-66-NH2 were prepared and both exhibited high Fenton-like photocatalytic activities for the degradation of organic contaminants. Removal efficiencies o...

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Bibliographic Details
Published in:New journal of chemistry 2023-07, Vol.47 (29), p.13855-13865
Main Authors: Cheng, Yong, Deng, Lin, Wang, Dan, Ji, Changchun, Ying-Hua, Zhou
Format: Article
Language:English
Subjects:
Contaminants
Electron paramagnetic resonance
Electron spin
Oxidation
Photodegradation
Pollutants
Rhodamine
Spin resonance
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Summary:The development of advanced catalysts is essential for efficient elimination of the emerging organic pollutants in water. Herein, Cu9S5 and Cu9S5@UiO-66-NH2 were prepared and both exhibited high Fenton-like photocatalytic activities for the degradation of organic contaminants. Removal efficiencies of 85% and 92% were achieved for Congo red (CR) and Rhodamine B (Rh B), respectively. It is found from active species trapping experiments and electron spin resonance (ESR) analysis that ·O2−/h+ and ·O2−/·OH played key roles in the oxidation reaction of these two pollutants, respectively. The mechanisms were discussed on the basis of the cycles of Cu+/Cu2+.
ISSN:1144-0546
1369-9261
DOI:10.1039/d3nj01083j