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A study of factors that change the wettability of titania films

Mills, A. and Crow, M. (2008) A study of factors that change the wettability of titania films. International Journal of Photoenergy (Article Number: 470670). ISSN 1110-662X

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Abstract

The effect of several pretreatment methods on the wettability of polycrystalline titania-coated glass (Pilkington Activ) and plain glass are investigated. UV/ozone, immersion in aqua regia, and heating (T > 500 degrees C) render both substrates superhydrophilic (i.e., water contact angle (CA) < 5 degrees). The dark recovery of the contact angles of these superhydrophilic substrates, monitored after treatment in either an evacuated or an ambient atmosphere, led to marked increases in CA. Ultrasound treatment of superhydrophilic Activ and glass samples produced only small increases in CA for both substrates, but rubbing the samples with a cloth produced much larger increases. The results of this study are discussed in the context of the current debate over the mechanism of the photo-induced superhydrophilic effect. Copyright (C) 2008 A. Mills and M. Crow.

Item type: Article
ID code: 17078
Keywords: TIO2 THIN-FILMS, PHOTOINDUCED SUPERHYDROPHILICITY, SURFACE, HYDROPHILICITY, CONVERSION, DIOXIDE, PHOTOCATALYSIS, HYDROCARBONS, GENERATION, Chemistry, Physical and theoretical chemistry, Materials Science(all), Atomic and Molecular Physics, and Optics, Chemistry(all), Renewable Energy, Sustainability and the Environment
Subjects: Science > Chemistry
Science > Chemistry > Physical and theoretical chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 27 Apr 2010 16:23
    Last modified: 05 Sep 2014 01:56
    URI: http://strathprints.strath.ac.uk/id/eprint/17078

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