Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16484
Title: Comparison of catalytic activity of two platinised TiO2 films towards the oxidation of organic pollutants
Authors: He, C
Shu, D
Xiong, Y
Zhu, X
Li, X
Keywords: Formic acid
Photocatalysis
Photoelectrocatalysis
Pt
TiO2
Issue Date: 2006
Publisher: Pergamon Press
Source: Chemosphere, 2006, v. 63, no. 2, p. 183-191 How to cite?
Journal: Chemosphere 
Abstract: Two types of platinised TiO2 films, i.e., Pt-TiO2/ITO and Pt(TiO2)/ITO, were prepared by a procedure of dip-coating and subsequent photo-deposition, and photo-deposition and subsequent dip-coating, respectively. They were well characterized by DRS, XRD spectra, SEM microscopy and photoelectrochemical measurement. Their photocatalytic, dark catalytic and photoelectrocatalytic activities were investigated using formic acid as a model organic pollutants. Compared with pure TiO2/ITO film, the photocatalytic activity of the platinised TiO2 films were apparently improved. However, the improvement was considerably dependent on the preparation method of these films. Pt-TiO2/ITO not only possessed higher photocatalytic activity but also showed a dark catalytic activity towards HCOOH degradation. As a sequence, it was first emphasized that the dark catalytic effect of Pt-TiO2/ITO was partly responsible for degradation of formic acid in the photocatalytic oxidation process. Although the Pt(TiO 2)/ITO film does not exhibit the dark catalytic activity, its photocatalytic degradation efficiencies towards HCOOH are higher than that of Pt-TiO2/ITO film. Therefore, in view of enhanced photocatalytic activity, the Pt(TiO2)/ITO was more favored than Pt-TiO 2/ITO film.
URI: http://hdl.handle.net/10397/16484
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2005.08.048
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