Journal
APPLIED SURFACE SCIENCE
Volume 427, Issue -, Pages 525-532Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.07.299
Keywords
Bismuth vanadate; Hydrothermal synthesis; Morphology; Photocatalytic activity; Dye degradation
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Funding
- National Natural Science Foundation of China [21636010]
- Central South University Postdoctoral International Exchange Program
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Bismuth vanadate (BiVO4) microstructures with dumbbell, rod, ellipsoid, sphere, and cake-like morphologies have been successfully fabricated by using a surfactant-free hydrothermal method, in which the morphology of the BiVO4 microstructures can be tuned by simply varying the molar ratio of Bi(NO)(3).5H(2)O to NaVO3 in the starting materials. Based on a series of contrast experiments, the probable formation mechanism of the BiVO4 microstructures with multiple shapes have been proposed. The photocatalytic performances of the as-prepared BiVO4 microstructures have been evaluated by studying the degradation of Rhodamine B solutions under visible light irradiation. The results reveal that the cake-like BiVO4 microstructures exhibit the higher photocatalytic activity than other BiVO4 microstructures due to its high surface area and unique morphology. (C) 2017 Elsevier B.V. All rights reserved.
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