Versatile double-templating synthesis route to silica monoliths exhibiting a multimodal hierarchical porosity

Jan-Henrik Smått, Stephan Schunk, Mika Lindén

    Research output: Contribution to journalArticleScientificpeer-review

    213 Citations (Scopus)

    Abstract

    Monolithic silica exhibiting a trimodal, hierarchical pore structure has successfully been prepared via sol-gel-processing. Monolithic bodies with interconnected macropores in the micrometer range are a result of controlled phase separation and gelation kinetics, whereas textural mesopores in the 10-20 nm range originate from voids between particles. Furthermore, the particles exhibit internal mesoporosity with pore diameters in the 2-4 nm range originating from supramolecular templating by the surfactant. Poly(ethylene glycol) has been used together with alkylammonium surfactants to control the particle aggregation and internal structure, respectively. The present work sheds light on the mechanism of formation of the complex framework architectures and the application potential of the material.
    Original languageUndefined/Unknown
    Pages (from-to)2354–2361
    Number of pages8
    JournalChemistry of Materials
    Volume15
    DOIs
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed

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