Issue 18, 2005
From the journal:

Journal of Materials Chemistry

Cellular mesoscopically organized silica monoliths with tailored surface chemistry by one-step drying/extraction/surface modification processes

Doris Brandhuber,a   Nicola Huesing,*b   Christina K. Raab,a   Viktoria Tormaa  and  Herwig Peterlikc  

* Corresponding authors

a Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria

b Inorganic Chemistry I, University of Ulm, Ulm, Germany
E-mail: Nicola.huesing@chemie.uni-ulm.de
Fax: +49 731 5022733
Tel: +49 731 5022730

c Institute of Materials Physics, University of Vienna, Vienna, Austria

Abstract

Large, low density silica monoliths with a hierarchical organisation of macro- and periodically arranged mesopores were obtained in a one-step procedure by treatment of as-synthesized wet gels with trimethylchlorosilane. This approach does not only offer the possibility to simultaneously achieve drying of the gel body and extraction of the block copolymer surfactant while preserving a monolithic body but also allows a viable access to surface modification. Monolithic gels from different drying procedures with or without extraction of the templating agent and supercritical drying in carbon dioxide are compared to the ones from treatment with trimethylchlorosilane. The choice of post-treatment and drying protocol offers the possibility to deliberately tailor the surface chemistry of these hierarchically organized silica monoliths.

Graphical abstract: Cellular mesoscopically organized silica monoliths with tailored surface chemistry by one-step drying/extraction/surface modification processes

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Article information

DOI
https://doi.org/10.1039/B417675H
Article type
Paper
Submitted
22 Nov 2004
Accepted
17 Feb 2005
First published
08 Mar 2005

J. Mater. Chem., 2005,15, 1801-1806

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Cellular mesoscopically organized silica monoliths with tailored surface chemistry by one-step drying/extraction/surface modification processes

D. Brandhuber, N. Huesing, C. K. Raab, V. Torma and H. Peterlik, J. Mater. Chem., 2005, 15, 1801 DOI: 10.1039/B417675H

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