3D multilayered Bi4O5Br2 nanoshells displaying excellent visible light photocatalytic degradation behaviour for resorcinol.

Journal article


Hu, Hanmei, Xu, Juanjuan, Deng, Chonghai, Wang, Man, Zhou, Xiaoyu and Le, Huirong 2018. 3D multilayered Bi4O5Br2 nanoshells displaying excellent visible light photocatalytic degradation behaviour for resorcinol. Micro & Nano Letters. https://doi.org/10.1049/mnl.2017.0886
AuthorsHu, Hanmei, Xu, Juanjuan, Deng, Chonghai, Wang, Man, Zhou, Xiaoyu and Le, Huirong
Abstract

High-ordered three-dimensional multilayered Bi4O5Br2 nanoshells have been fabricated successfully via a green ultrasound-assisted anion exchange reaction followed by a calcination treatment approach. The products are characterised by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, UV–vis diffuse reflectance spectrum and N2 adsorption/desorption isotherms. The results reveal that ternary Bi4O5Br2 nanoshells possess a pure monoclinic phase with the average thickness of ca. 12 nm, and the walls are of 10–12 layers constructed by nanograins with 10 nm in size. The specific surface is measured to be 36.18 m2 g-1 and the band gap energy E g value is calculated to be 2.52 eV. The possible formation process for Bi4O5Br2 nanoshells is simply proposed. According to the photocatalytic degradation for resorcinol under visible light irradiation, the as-prepared Bi4O5Br2 nanoshells exhibit excellent photocatalytic performance, which is not only far beyond the degradation rate of BiOBr precursor nanosheets but also superior to that of other reported Bi4O5Br2 architectures, suggesting a practical application for the treatment of organic pollutants.

KeywordsCrystal growth; Nanocrystalline; Synthesis; Catalyst
Year2018
JournalMicro & Nano Letters
PublisherThe Institution of Engineering and Technology
ISSN17500443
Digital Object Identifier (DOI)https://doi.org/10.1049/mnl.2017.0886
Web address (URL)http://hdl.handle.net/10545/622806
hdl:10545/622806
Publication dates26 Apr 2018
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Deposited16 Jul 2018, 08:11
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Archived with thanks to Micro & Nano Letters

ContributorsAnhui Jianzhu University, Hefei University and University of Derby
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