Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl

Title
Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl
Authors
Hongjian YanSaji Thomas KochuveeduLi Na Quan이상수Dong Ha Kim
Keywords
Co-doped TiO2; C, F-doping; Photocatalysis; Visible light activity; AgCl
Issue Date
2013-05
Publisher
Journal of alloys and compounds
Citation
VOL 560, 20-26
Abstract
A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of nonmetal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO2 nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF2 and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO2 photocatalyst. The C, F-codoped TiO2 shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO2 enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO2 to the AgCl phase.
URI
http://pubs.kist.re.kr/handle/201004/44572
ISSN
09258388
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KIST Publication > Article
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