期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 297, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122066
关键词
Bi12O17Cl2; Co3O4; Heterojunction; Photocatalysis; Degradation
资金
- talent scientific research fund of LSHU [2016XJJ-080]
- scientific research fund of Liaoning Provincial Education Department [L2020038]
A novel Co3O4/Bi12O17Cl2 heterojunction catalyst was successfully constructed for the first time using a hydrothermal method, exhibiting superior photocatalytic performance by enhancing the separation of photo-generated carriers and visible light absorption.
A novel Co3O4/Bi12O17Cl2 heterojunction catalyst has been constructed for the first time via a sample hydrothermal course. The chemical, optical and physical properties of as-constructed materials were examined by XRD, XPS, TEM, and DRS methods. These results demonstrated that Co(3)O(4 )nanoparticles evenly dispersed on Bi12O17Cl2 flakes, forming heterojunction nanostructure. When Co3O4/Bi12O17Cl2 photocatalyst was used for degrading rhodamine b (RhB), the best Co3O4/Bi12O17Cl2 sample (0.122 min(-1)) exhibited 2.5 folds higher rate constant than bare Bi12O17Cl2 (0.048 min(-1)), which owed to the collaborative interactions of heterojunction between Co3O4 and Bi12O17Cl2, accelerating validly the separation of photo-generated carriers, boosting visible light absorbance. Simultaneously, various radical scavenger tests indicated that center dot O-2(-) and h(+) were prime parts for heightening activity. Eventually, depending on the above experimental conclusions, a photocatalytic mechanism was presented for the Co3O4/Bi12O17Cl2 heterojunction.
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