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Crystals 2016, 6(7), 75; doi:10.3390/cryst6070075

Effect of HNO3 Concentration on the Morphologies and Properties of Bi2WO6 Photocatalyst Synthesized by a Hydrothermal Method

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Author to whom correspondence should be addressed.
Academic Editor: Monica Distaso
Received: 10 May 2016 / Revised: 27 June 2016 / Accepted: 28 June 2016 / Published: 20 July 2016
(This article belongs to the Special Issue Mesocrystals and Hierarchical Structures)
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Bi2WO6 samples were prepared by a hydrothermal method using Bi(NO3)3·5H2O and Na2WO4·2H2O as raw materials. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), Raman and Brunauer–Emmett–Teller (BET) were employed for sample characterization. The photocatalytic activity of the samples was evaluated by the degradation of Rhodamine B under visible-light irradiation. The photocatalytic activity of Bi2WO6, as well as the effect of varying HNO3 concentrations on the morphologies of Bi2WO6, was investigated. The HNO3 concentration significantly affected the structure and morphology of the Bi2WO6. The photocatalytic performance varied with the structure, morphology, and surface area of the Bi2WO6 samples. The results indicated that the H10 sample exhibits uniform morphology and excellent photocatalytic performance; using this sample, the degradation of Rhodamine B reached 96% in 90 min under visible-light irradiation. View Full-Text
Keywords: photocatalysis; Bi2WO6; morphology; degradation; nanosheet photocatalysis; Bi2WO6; morphology; degradation; nanosheet

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, W.; Guo, M.; Lu, D.; Wang, W.; Fu, Z. Effect of HNO3 Concentration on the Morphologies and Properties of Bi2WO6 Photocatalyst Synthesized by a Hydrothermal Method. Crystals 2016, 6, 75.

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