期刊
PHYSICA B-CONDENSED MATTER
卷 419, 期 -, 页码 80-85出版社
ELSEVIER
DOI: 10.1016/j.physb.2013.03.024
关键词
Photocatalyst; Ag-BiVO4; Thiophene; Visible light; Photocatalytic oxidation; Desulfurization
资金
- National Natural Science Foundation of China [21003103]
- Nature Scientific Research Foundation of Shaanxi Provincial Education Office of China [2010J5061]
A series of Ag-BiVO4 photocatalysts was synthesized by the hydrothemal synthesis method for different pH values. A strong correlation was found among the prepared processing, structure and property of the samples. With increasing pH value from 5 to 9, the crystallinity increases and the as-prepared Ag-BiVO4 sample gradually disappeared from the nanostructures. The light absorption became higher in the UV and visible range, accompanied by a bathochromic shift of the absorption edge. The competitive relations between crystallinity and surface area affecting photocatalytic activity were also discussed. Photocatalytic desulfurization on the as-prepared Ag-BiVO4 samples using thiophene dissolved in n-octane as a model organosulfur compound was performed. It showed that the photocatalytic desulfurization on the as-prepared Ag-BiVO4 sample at pH = 7 can be up to 95%, which existed as various size particles and had significant high surface area of 13.768 m(2) g(-1). (C) 2013 Elsevier B.V. All rights reserved.
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