Abstract
Using WO3·0.33H2O nanoplates as precursors in cetyltrimethylammonium bromide (CTAB)-assisted processes, bismuth tungstate (Bi2WO6) nanonests and nanosheets were successfully prepared by a facile hydrothermal method, followed by characterization by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, Raman spectra, nitrogen adsorption–desorption [Brunauer–Emmett–Teller (BET)] analysis, and UV–Vis diffuse reflectance spectra. The results indicated that the concentration of cetyltrimethylammonium bromide played a major role in the formation of Bi2WO6 nanonests. A possible formation mechanism is presented on the basis of the experimental results. The photocatalytic activities of the resulting Bi2WO6 nanostructures were also evaluated by photodegradation of methylene blue under visible-light irradiation. Bi2WO6 nanonests showed higher photocatalytic activity than Bi2WO6 nanosheets, because of their higher surface area and special structure.
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Acknowledgments
This work was partly supported by the National Natural Science Foundation of China (No. 21003065), Natural Science Foundation of Jiangsu Province (BK2010166), Industry High Technology Foundation of Jiangsu (BE2010144), Scientific Innovation Research of College Graduate in Jangsu Province (CXZZ12 0682), Social Development Foundation of Zhenjiang (SH2011005 and SH2012011), Industry Technology Foundation of Zhenjiang, China (GY2012017), and Research Foundation for Talented Scholars of Jiangsu University (10JDG133).
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Wei, W., Xie, J., Lü, X. et al. CTAB-assisted synthesis and characterization of Bi2WO6 photocatalysts grown from WO3·0.33H2O nanoplate precursors. Monatsh Chem 145, 47–59 (2014). https://doi.org/10.1007/s00706-013-0994-7
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DOI: https://doi.org/10.1007/s00706-013-0994-7