期刊
CHEMOSPHERE
卷 117, 期 -, 页码 527-531出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2014.09.017
关键词
Visible-light driven; BiVO4; Abundant metal loaded; Ibuprofen
资金
- Beijing Higher Education Young Elite Teacher Project [YETP0773]
- National Natural Science Foundation of China [51278053, 21373032]
- Beijing Natural Science Foundation [8122031]
- Fundamental Research Funds for the Central Universities
- Kochi University of Technology
An efficient method for the degradation of ibuprofen as an aqueous contaminant was developed under visible-light irradiation with as-prepared bismuth vanadate (BiVO4) catalysts. The metal-loaded catalysts Cu-BiVO4 and Ag-BiVO4 were synthesized using a hydrothermal process and then a wet-impregnation method. All of the materials were fully characterized by X-ray diffraction, scanning electron microscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy and BET surface area. The results indicated that all of the prepared samples had monoclinic scheelite structures. In the metal-loaded catalysts, silver existed as a mixture of Ag and Ag2O on the surface of the catalysts. However, copper existed as Cu2O and CuO. Additionally, the band gap values of BiVO4, Ag-BiVO4, and Cu-BiVO4 were 2.38, 2.31, and 2.30 eV, respectively. Compared to the BiVO4 catalyst, the metal-loaded BiVO4 catalysts showed superior photocatalytic properties for the degradation of ibuprofen. (C) 2014 Elsevier Ltd. All rights reserved.
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