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

Doris Brandhuber, Nicola Hüsing, Christina K Raab, Viktoria Torma, Herwig Peterlik

    Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

    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. © The Royal Society of Chemistry 2005.
    OriginalspracheEnglisch
    Seiten (von - bis)1801-1806
    Seitenumfang6
    FachzeitschriftJournal of Materials Chemistry
    Jahrgang15
    Ausgabenummer18
    DOIs
    PublikationsstatusVeröffentlicht - 2005

    ÖFOS 2012

    • 1030 Physik, Astronomie

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