Photoelectrochemical characterization and photocatalytic properties of mesoporous <mml:math alttext="${{{\text{TiO}}_{\text{2}} } \mathord{\left/ {\vphantom {{{\text{TiO}}_{\text{2}} } {{\text{ZrO}}_2 }}} \right. \kern-\nulldelimiterspace} {{\text{ZrO}}_2 }}$" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mtext>TiO</mml:mtext></mml:mrow><mml:mtext>2</mml:mtext></mml:msub></mml:mrow><mml:mo>/</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mtext>ZrO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:mrow></mml:mrow></mml:math> films

Smirnova, Natalie; Gnatyuk, Yuriy; Eremenko, Anna; Kolbasov, Gennadiy; Vorobetz, Vera; Kolbasova, Irina; Linyucheva, Olga

doi:https://doi.org/10.1155/IJP/2006/85469

International Journal of Photoenergy

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Volume 2006 | Article ID 085469 | https://doi.org/10.1155/IJP/2006/85469

Photoelectrochemical characterization and photocatalytic properties of mesoporous TiO2/ZrO2 films

Natalie Smirnova,¹Yuriy Gnatyuk,¹Anna Eremenko,¹Gennadiy Kolbasov,²Vera Vorobetz,²Irina Kolbasova,³and Olga Linyucheva³

Received25 Feb 2005

Revised10 Jul 2005

Accepted28 Aug 2005

Published16 Feb 2006

Abstract

Optically transparent, crack-free mesoporous titania and zirconia-doped titania thin film photocatalysts were fabricated by sol-gel technique, using nonionic amphiphilic block copolymer Pluronic P123 as template. The structural and optical properties of these films were characterized using SEM, low-angle XRD, and UV/Vis spectroscopy, hexane adsorption investigation. Band gap energy and the position of flatband potentials were estimated by photoelectrochemical measurements. Enhancing of photocatalytic activity of zirconia-doped films relative to pure TiO2 originates from an anodic shift of the valence band edge potential. Catalytic activity of mesoporous TiO2 and TiO2/ZrO2 (5–50% of ZrO2) films in the processes of CrVI to CrIII photoreduction and 2,4-dinitroaniline photooxidation correlates with crystalline size and growth with increasing of specific surface area of the samples.

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Copyright

Copyright © 2006 Natalie Smirnova et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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