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The Gel Route to TiO2 Photoanodes

Published online by Cambridge University Press:  28 February 2011

S. Doeuff ,
M. Henry  and
C. Sanchez
S. Doeuff
Affiliation:
Spectrochimie du Solide, Université Paris VI, 4 place Jussieu, Tour 44, 2è étage, 75230 Paris Cedex 05, France.
M. Henry
Affiliation:
Spectrochimie du Solide, Université Paris VI, 4 place Jussieu, Tour 44, 2è étage, 75230 Paris Cedex 05, France.
C. Sanchez
Affiliation:
Spectrochimie du Solide, Université Paris VI, 4 place Jussieu, Tour 44, 2è étage, 75230 Paris Cedex 05, France.
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Abstract

Cr3+ and Al3+ doped TiO2 can be easily made via the sol-gel process. Mixing the metal-organic solutions give rise to a random dispersion of the doping ions into the TiO2 network. Amorphous and crystalline phases have been characterized all the way from the gel to the crystalline products by thermal analysis, X-ray diffraction, vibrational spectroscopy and E.S.R. Organic groups appear to be involved in the formation of the gel network and could lead to a better control of the morphology of the xerogel. A thermal stabilization of the anatase phase, up to 900°C, is observed when Cr3+ is introduced as a dopant. This would lead to the preparation of anatase TiO2 photoanodes.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 653
Copyright
Copyright © Materials Research Society 1986

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