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Niobium and tantalum doped titania particles

Published online by Cambridge University Press:  31 January 2011

Václav Štengl ,
Vendula Houšková ,
Snejana Bakardjieva ,
Nataliya Murafa  and
Petr Bezdička
Petr Bezdička
Affiliation:
Institute of Inorganic Chemistry, 250 68 Řež, Czech Republic
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Abstract

Niobium and tantalum doped anatase were prepared by thermal hydrolysis of peroxotitanium complex aqueous solutions containing of niobium or tantalum peroxo-complexes at 100 °C for 3 days. Niobium-doping increased the unit cell constants of anatase and changed the morphology of TiO2 from spindle-like to rectangular or square cross section. Nb and Ta doping in the TiO2 nanostructure increases the anatase to rutile transformation temperature to >1000 °C. In the visible region, the photocatalytic activity is directly proportional to the concentration and increases with increasing of Nb concentration. The niobium addition enhances the photocatalytic activity of titania in the visible light region.

Keywords

Chemical synthesisPhotochemical
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 10 , October 2010 , pp. 2015 - 2024
Copyright
Copyright © Materials Research Society 2010

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