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Issue 12, 2004
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Designed synthesis of large-pore mesoporous silicazirconia thin films with high mixing degree and tunable cubic or 2D-hexagonal mesostructure

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Abstract

Mesoporous oxide thin films with a mixed silica/zirconia framework were reproducibly synthesised for the first time by a two-step dip-coating method. Different synthesis strategies were developed for the Si-rich and Zr-rich regions. These optical quality films are highly organised and oriented, stable, and exhibit amorphous mixed frameworks presenting good dispersion of both cations at the molecular level. Si inclusion in zirconia matrices modifies the inorganic network, improving the thermal stability of the mesostructure. A ‘library’ of varied compositions [0 ≤ fSi = [Si]/([Si] + [Zr]) ≤ 0.3; 0.7 ≤ fSi = [Si]/([Si] + [Zr]) ≤ 1] and tunable mesostructures (cubic Im3m, 2D-hexagonal p6m, local hexagonal, lamellar) has been established with F127, P123 and Brij 58 as templates, opening the way to using different PEO-based polymers to fine-tune the pore sizes.

Graphical abstract: Designed synthesis of large-pore mesoporous silica–zirconia thin films with high mixing degree and tunable cubic or 2D-hexagonal mesostructure

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Publication details

The article was received on 08 Dec 2003, accepted on 13 Apr 2004 and first published on 14 May 2004


Article type: Paper
DOI: 10.1039/B316033E
Citation: J. Mater. Chem., 2004,14, 1879-1886
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    Designed synthesis of large-pore mesoporous silicazirconia thin films with high mixing degree and tunable cubic or 2D-hexagonal mesostructure

    G. J. A. A. Soler-Illia, E. L. Crepaldi, D. Grosso and C. Sanchez, J. Mater. Chem., 2004, 14, 1879
    DOI: 10.1039/B316033E

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