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Journal of Materials Science
Erschienen in: Journal of Materials Science 24/2020

24.04.2020 | Energy materials

Fabrication of oxygen-vacancy-rich black-BiOBr/BiOBr heterojunction with enhanced photocatalytic activity

verfasst von: Hongguang Zhang, Liye Zhao, Liang Wang, Jian Hao, Xiangchao Meng

Erschienen in: Journal of Materials Science | Ausgabe 24/2020

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Abstract

Photocatalysis, as an advanced oxidization process, has been extensively studied in environmental remediation. To suppress the recombination of photogenerated charge carriers, a novel oxygen-vacancy-rich black BiOBr/BiOBr isotype heterojunction has been successfully fabricated by surface hydrogenation. As-prepared samples were comprehensively characterized by various techniques. Photocatalytic activity of as-prepared samples was measured via degradation of colorless organic pollutant (phenol) in water under visible light. It was found that over 90% of phenol were removed over 210 min under visible light, which was double and 4.5 times higher than that of black BiOBr and pure BiOBr, respectively. The enhancement in photocatalytic activity may be attributed to the synergistic effects of isotype heterojunction and oxygen vacancy. Formation of heterojunction facilitated photogenerated charge carriers’ separation. And the surface oxygen vacancies acted electrons acceptors and reactive sites in photocatalytic oxidization process. This work sheds a light on the significance of oxygen vacancies in improving photocatalytic activity.
Vorheriger Artikel Altering the MOF-74 derivatives for efficient oxygen electrocatalysis through synergistic multi-metals and nitrogen modification
Nächster Artikel Experimental study of the Al–Cu–Zn ternary phase diagram

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Metadaten
Titel
Fabrication of oxygen-vacancy-rich black-BiOBr/BiOBr heterojunction with enhanced photocatalytic activity
verfasst von
Hongguang Zhang
Liye Zhao
Liang Wang
Jian Hao
Xiangchao Meng
Publikationsdatum
24.04.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 24/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-020-04700-9

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