Ce-regulating defect and morphology engineering for efficiently enhancing the piezocatalytic performances of BiOBr

Cerium-doped bismuth oxybromide (1%, 5% and 10% Ce-BiOBr) piezocatalysts were synthesized. The piezocatalytic activity was efficiently regulated by defect and morphology engineering. Among them, the 5% Ce-BiOBr exhibits the highest piezocatalytic hydrogen production property with an evolution rate o...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2024-02, Vol.6 (14), p.1892-1895
Main Authors: Zhan, Lihui, Hu, Jindou, Cao, Yali, Ning, Xueer, Xie, Jing, Lu, Zhenjiang, Hao, Aize
Format: Article
Language:English
Subjects:
Bismuth
Cerium
Defects
Hydrogen production
Morphology
Reaction kinetics
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Summary:Cerium-doped bismuth oxybromide (1%, 5% and 10% Ce-BiOBr) piezocatalysts were synthesized. The piezocatalytic activity was efficiently regulated by defect and morphology engineering. Among them, the 5% Ce-BiOBr exhibits the highest piezocatalytic hydrogen production property with an evolution rate of 1147.6 μmol g −1 h −1 , nearly twice that of the original BiOBr. Additionally, the MO dye degradation efficiency of 5% Ce-BiOBr reaches 91.9% within 60 min, with a higher reaction kinetic constant (0.0376 min −1 ) that was 6.1 times larger than that of pure BiOBr. These outstanding performances of 5% Ce-BiOBr surpass those of most other piezocatalytic material systems. Ce-doped BiOBr piezocatalysts are rationally designed by defect and morphology engineering strategies, and demonstrate excellent catalytic performances.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc05550g