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Controlled Design of Mesostructured Titania Based Materials

Published online by Cambridge University Press:  01 February 2011

G.J. de A.A. Soler-Illia,
D. Grosso,
E. L. Crepaldi,
F. Cagnol and
C. Sanchez
G.J. de A.A. Soler-Illia
Affiliation:
Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54 5e, 75252, Paris Cedex 05, France. e-mail: galo@ccr.jussieu.fr
D. Grosso
Affiliation:
Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54 5e, 75252, Paris Cedex 05, France. e-mail: galo@ccr.jussieu.fr
E. L. Crepaldi
Affiliation:
Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54 5e, 75252, Paris Cedex 05, France. e-mail: galo@ccr.jussieu.fr
F. Cagnol
Affiliation:
Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54 5e, 75252, Paris Cedex 05, France. e-mail: galo@ccr.jussieu.fr
C. Sanchez
Affiliation:
Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54 5e, 75252, Paris Cedex 05, France. e-mail: galo@ccr.jussieu.fr
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Abstract

Mesostructured TiO2-surfactant hybrid xerogels and thin films are prepared by Evaporation-Induced Self Assembly (EISA). These organized structures are reproducibly formed through cooperative self-assembly between hydrophilic Ti-oxo species and a micellar template after selective solvent evaporation from ethanol/HCl/H2O media. The construction of these networks is tailored by tuning the hydrolysis-condensation of the metallic cations with the self-assembly of the organic counterparts (“hydrophilic matching” approach). The hybrids present hexagonal mesostructure (p6m). The formation kinetics of the mesophase is followed by SAXS, interferometry and mass spectrometry (MS) analysis of the vapor phase. An adequate thermal treatment of the organized hybrids leads to high surface (150-400m2 g-1) phosphorus-free mesoporous titania films or powders, with walls containing anatase nanocrystallites. This approach can be successfully extended to other non-silicate based meso-structured materials.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 726: Symposium Q – Hybrid Organic-Inorganic Materials , 2002, Q7.3
Copyright
Copyright © Materials Research Society 2002

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