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Preparation and characterization of visible light sensitive Fe- and Ta-codoped TiO2 photocatalyst

Published online by Cambridge University Press:  31 January 2011

Tetsuya Kako ,
Weifeng Yao  and
Jinhua Ye
Jinhua Ye*
Affiliation:
Photocatalytic Materials Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Titania (TiO2) was modified by codoping of Fe3+ and Ta5+ to absorb visible light. The codoped titania [(Fe,Ta)xTi1–xO2, 0 ≤ x ≤ 1] were prepared by a solid state reaction or by the polymer complex method. With increased codoping, the optical absorption spectra are red-shifted and the color ranges from white to brown via yellow. Also, the codoped titania (0 < x ≤ 0.05) possesses photocatalytic activity for organic decomposition under visible light irradiation. The codoped titania (x = 0.01) with yellow color shows the highest activity among the codoped titania (0 ≤ x ≤ 1) and a higher activity than the 1% Fe3+-doped TiO2 with orange brown color.

Keywords

DopantOxidationPhotochemical
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 1: Photocatalysis for Energy and Environmental Sustainability , January 2010 , pp. 110 - 116
Copyright
Copyright © Materials Research Society 2010

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