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

Title
Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl
Authors
Yan H.Kochuveedu S.T.Quan L.N.Lee S.S.Kim D.H.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2013
Journal Title
Journal of Alloys and Compounds
ISSN
0925-8388JCR Link
Citation
vol. 560, pp. 20 - 26
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of non-metal 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. © 2013 Elsevier B.V. All rights reserved.
DOI
10.1016/j.jallcom.2013.01.155
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자연과학대학 > 화학·나노과학전공 > Journal papers
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