Self-Assembled 3-D Architectures of BiOBr as a Visible Light-Driven Photocatalyst
In this work, we demonstrated the EG-assisted solvothermal synthesis of 3-D microspherical BiOBr architectures assembled by nanosheets. The morphology and compositional characteristics of the 3-D architectures were investigated by various microscopy techniques. The possible formation mechanism for t...
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Published in | Chemistry of materials Vol. 20; no. 9; pp. 2937 - 2941 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
13.05.2008
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Subjects | |
Online Access | Get full text |
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Summary: | In this work, we demonstrated the EG-assisted solvothermal synthesis of 3-D microspherical BiOBr architectures assembled by nanosheets. The morphology and compositional characteristics of the 3-D architectures were investigated by various microscopy techniques. The possible formation mechanism for the architectures was discussed. The band gap of the obtained BiOBr materials was estimated to be 2.54 eV by UV–vis. The specific surface area and porosity of the BiOBr 3-D architectures also were investigated by using nitrogen adsorption and desorption isotherms. Because of the narrow bandgap and the novel 3-D micro-/nanostructure, the BiOBr architectures show a more excellent photocatalytic activity under visible light irradiation than the BiOBr bulk plates. Several possible reasons for the higher photocatalytic activity have been taken into consideration. In addition, the photocatalyst is stable during the reaction and can be used repeatedly. |
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Bibliography: | EDS spectrum of BiOBr 3-D architectures and XRD pattern and SEM image of BiOBr bulk plates. This material is available free of charge via the Internet at http://pubs.acs.org. ark:/67375/TPS-TL0K62HX-9 istex:D92D52EDE7551A3AE589568DC791CB6B84AE6A37 |
ISSN: | 0897-4756 1520-5002 |
DOI: | 10.1021/cm7031898 |