期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 317, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121793
关键词
Piezocatalysis; Z-scheme Heterojunction; Interface engineering; DFT calculation; Carbamazepine
资金
- Natural Science Foundation of China [51979081, 52100179]
- Fundamental Research Funds for the Central Universities [B210202052]
- China Postdoctoral Sci- ence Foundation [2020M680063, 2021T140176]
- PAPD
In this work, a Z-scheme Bi2S3-Bi2WO6 heterojunction with interfacial Bi-S bonds was constructed. The obtained BS-BWO heterojunction exhibited significantly enhanced piezocatalytic performance, which could be attributed to the Z-scheme charge transfer through the formed Bi-S bonds. The increased piezoelectric potential of BS-BWO also contributed to the enhanced piezocatalytic performance, as supported by COMSOL simulation.
In this work, a Z-scheme Bi2S3-Bi2WO6 (BS-BWO) heterojunction with interfacial Bi-S bonds was constructed by in-situ growing Bi(2)S(3 )nanorods on Bi(2)WO(6 )nanosheets. The obtained BS-BWO heterojunction exhibited significantly enhanced piezocatalytic performance on carbamazepine (CBZ) degradation with an apparent rate constant of 0.087 min(-1). Density functional theory (DFT) calculations together with experimental characterizations illustrated that the boosted piezocatalytic performance of BS-BWO could be ascribed to the Z-scheme charge transfer through the formed Bi-S bonds, which increased the charge transfer/separation efficiency and maintained the strong redox ability of photogenerated electrons/holes. Moreover, the increased piezoelectric potential of BS-BWO, as supported by COMSOL simulation, also contributed to the enhanced piezocatalytic performance. This study sheds light on the design and development of promising piezocatalysts for environ-mental remediation.
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