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Enhancement of visible light-induced surface photo-activity of nanostructured N¿TiO2 thin films modified by ion implantation

AuthorsRomero-Gómez, Pablo ; López-Santos, Carmen ; Borrás, Ana ; Espinós, J.P. ; Palmero, Alberto ; González-Elipe, Agustín R.
Issue Date2013
CitationChemical Physics Letters 582: 95- 99 (2013)
AbstractThis work reports the morphological and chemical modifications induced in TiO2 thin films by bombardment with high energy N+ ions at different temperatures and their different photo-activity responses after implantation under visible and UV light illumination. When implanted samples are illuminated with visible light, no dye photo-decolouration takes place despite that light transformed the surfaces from hydrophobic to hydrophilic. In agreement with the Wenzel model of wetting, correlation is found between visible light photo-activity and film morphology. We conclude that the photo-activity response can be separated into shallow and Schottky barrier photo-activity, this latter involving a thicker layer of material
Identifiersdoi: 10.1016/j.cplett.2013.07.025
issn: 0009-2614
Appears in Collections:(ICMS) Artículos
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