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

 

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Opened Access Enhancement of visible light-induced surface photo-activity of nanostructured N¿TiO2 thin films modified by ion implantation
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Author: Romero Gómez, Pablo
López Santos, Carmen
Borrás Martos, Ana Isabel
Espinós Manzorro, Juan Pedro
Palmero Acebedo, Alberto
Rodríguez González-Elipe, Agustín
Department: Universidad de Sevilla. Departamento de Química Inorgánica
Date: 2013
Published in: Chemical Physics Letters, 582, 95-99.
Document type: Article
Abstract: This 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
Cite: Romero Gómez, P., López Santos, C., Borrás Martos, A.I., Espinós Manzorro, J.P., Palmero Acebedo, A. y Rodríguez González-Elipe, A. (2013). Enhancement of visible light-induced surface photo-activity of nanostructured N¿TiO2 thin films modified by ion implantation. Chemical Physics Letters, 582, 95-99.
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URI: https://hdl.handle.net/11441/74161

DOI: 10.1016/j.cplett.2013.07.025

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