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Title: Preparation of TiO₂/ITO and TiO₂/Ti photoelectrodes by magnetron sputtering for photocatalytic application
Authors: He, Chun
Li, Xiang-zhong
Graham, Nigel
Wang, Yu
Subjects: Photoelectrocatalysis
Issue Date: 17-May-2006
Publisher: Elsevier
Source: Applied catalysis A: General, 17 May, 2006, v. 305, no. 1, p. 54-63.
Abstract: Two types of immobilized TiO₂ films with nanostructure, TiO₂/ITO conductive glass and TiO₂/Ti mesh, were prepared by a radio frequency magnetron sputtering technique, in which a titanium (Ti) target was sputtered in a gaseous mixture of argon and oxygen. The TiO₂ films were characterized by X-ray diffraction, AFM microscopy, SEM microscopy and photoelectrochemical measurements. Their photocatalytic (PC) activity, photoelectrocatalytic (PEC) activity and electrochemical (EC) activity were evaluated in the degradation of 2,4,6-trichlorophenol (TCP) in aqueous solution. The experiments confirmed that the TiO₂ films sputtered at 2.0 Pa had relatively high PC activity due to more active sites formed on the surface of TiO₂ films. The experiments demonstrated that the PEC activity of the TiO₂/Ti mesh was better than that of TiO₂/ITO, resulting from less impedance between the TiO₂ film and Ti mesh. Furthermore, the experiments also demonstrated that at a higher anodic potential, the TiO₂/Ti mesh exhibited not only a PEC reaction but also an EC oxidation reaction at the backed Ti mesh in the degradation of TCP. This study concludes that the sputtered TiO₂/Ti mesh is an effective photoelectrode for achieving an enhanced TCP degradation in such a PEC reaction system.
Rights: Applied Catalysis A: General © 2006 Elsevier. The journal web site is located at
Type: Journal/Magazine Article
DOI: 10.1016/j.apcata.2006.02.051
ISSN: 0926-860X
Appears in Collections:AP Journal/Magazine Articles
CEE Journal/Magazine Articles

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