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Journal of Materials Science
Erschienen in: Journal of Materials Science 13/2019

01.04.2019 | Chemical routes to materials

Bi-modified 3D BiOBr microsphere with oxygen vacancies for efficient visible-light photocatalytic performance

verfasst von: Chenghe Hua, Xiaoli Dong, Yu Wang, Nan Zheng, Hongchao Ma, Xiufang Zhang

Erschienen in: Journal of Materials Science | Ausgabe 13/2019

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Abstract

Flower-like Bi that deposited BiOBr with oxygen vacancies (OVs) has been successfully fabricated via a simple solvothermal method followed by an easy hydrogenated treatment. The characterization results show that three-dimensional (3D) H-1.0Bi@BiOBr microspheres with the diameter about 1.2–1.5 μm were self-assembled by countless two-dimensional (2D) interlaced BiOBr nanosheets. Bi-deposited and oxygen vacancies endowed the H-1.0Bi@BiOBr samples with a dramatically enhanced photocatalytic performance for the degradation of organic pollutants (Rhodamine B and Ofloxacin) and the solar-energy nitrogen fixation. It disclosed that the photocatalytic performance order of the photocatalyst was H200-1.0Bi@BiOBr > H250-1.0Bi@BiOBr > H150-1.0Bi@BiOBr > 1.0Bi@BiOBr > 2.0Bi@BiOBr > 0.5Bi@BiOBr > BiOBr. Particularly, the enhanced photocatalytic activity was ascribed to higher BET specific area, enhanced visible-light absorption, effective photoinduced charge separation and suitable amounts of oxygen vacancies. The H-1.0Bi@BiOBr samples also showed good photochemical stability under repeated visible-light irradiation. This work could shed light on exploring high-photocatalytic-property materials and stimulating the development of OVs-Bi@BiOBr photocatalysts, which had great potential for the solar-energy conversion, environmental purification and organic pollution treatment in water.
Vorheriger Artikel 2D visible-light-driven TiO2@Ti3C2/g-C3N4 ternary heterostructure for high photocatalytic activity
Nächster Artikel Preparation of nanostructured TiO2 films with high catalytic activity and their 3D spatial distribution of anatase and rutile phases

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Metadaten
Titel
Bi-modified 3D BiOBr microsphere with oxygen vacancies for efficient visible-light photocatalytic performance
verfasst von
Chenghe Hua
Xiaoli Dong
Yu Wang
Nan Zheng
Hongchao Ma
Xiufang Zhang
Publikationsdatum
01.04.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 13/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-019-03556-y

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