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Co9S8/CdS heterostructures as efficient photocatalysts for degradation of organic pollutant.

Authors :
Zhang, Ziyu
Dong, Xiaoli
Wang, Yu
Zheng, Nan
Ma, Hongchao
Zhang, Xiufang
Source :
Ceramics International. Aug2023, Vol. 49 Issue 15, p25207-25215. 9p.
Publication Year :
2023

Abstract

Because of its superior coupling and composition matching, narrow band gap semiconductor heterojunction can increase redox activity, reduce carrier recombination, and enhance light absorption. When heterojunction photocatalysts are constructed properly, it is thought to be an efficient technique to boost photocatalytic activity. The Co 9 S 8 /CdS heterostructures in this study were created using a two-step solvothermal technique. The as-prepared Co 9 S 8 /CdS heterostructures exhibit outstanding photocatalytic degradation performance of methyl orange (MO) owing to their unique structure and compositional properties. Co 9 S 8 /CdS heterostructures can offer a remarkable MO degradation rate that can reach 97% in 25 min when illuminated by visible light. In addition to demonstrating better long-term stability after numerous cycling photocatalytic tests, experiments with radical trapping have shown that ·O 2 − is crucial for the photocatalytic degradation of MO. The pertinent photogenerated charge transfer and catalytic mechanisms of Co 9 S 8 /CdS heterostructures are suggested and examined. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02728842
Volume :
49
Issue :
15
Database :
Academic Search Index
Journal :
Ceramics International
Publication Type :
Academic Journal
Accession number :
164304308
Full Text :
https://doi.org/10.1016/j.ceramint.2023.05.053