期刊
MATERIALS LETTERS
卷 133, 期 -, 页码 20-23出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.06.123
关键词
Crystal structure; BiVO4; Photocatalytic activity; Yb-doped; Raman
资金
- Project of the National Natural Science Foundation of China [51172135]
- Graduate Innovation Fund of Shaanxi University of Science and Technology [SUST-A04]
- Shaanxi University of Science Technology [2013XSD06]
- State-Level College Students' Innovation and Entrepreneurship Training Program for Local Colleges and Universities [201310708003]
BiVO4 products doped with different contents of rare earth Yb3+ were prepared by a simple microwave-hydrothermal method. X-ray diffraction and Raman spectra reveal the structural transition from monoclinic (space group I2/a) to tetragonal structure (space group I41/amd) with Yb3+ doping. The morphology of Yb-doped BiVO4 has also changed from irregular plarelike structure to dispersive particles with rodlike structure, resulting in the increase of specific surface area (from 3.31 m(2)/g to 11.02 m2/g). The photocatalytic results demonstrate that tetragonal BiVO4 with the rodlike morphology and high surface area has an enhanced photocatalytic activity, which is quite different from the previous reports. (C) 2014 Elsevier B.V. All rights reserved.
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