Synthesis of mesoporous silica spheres by using neutral-cationic surfactant and semi-batch growth

Jian Quan Qiu, Xiang Zhao, Minchao Jin, Qiang Cai, Heng De Li

    Research output: Contribution to journalArticle

    Abstract

    A one-step synthesis of mono-dispersed mesoporous silica spheres by using the mixed surfactants CTAB and dodecylamine proceeded with the hydrolysis and condensation of tetraethylorthosilicate (TEOS) in a mixture of alcohol, isopropyl alcohol, water, and ammonia as a catalyst. The silica spheres have high specific surface area and can be used as a good substrate in high performance liquid chromatography (HPLC). The size of 0.2-1.5 μm and morphology of the silica spheres can be controlled by varying the proportion of surfactant and co-solvent. The prepared silica spheres can be enlarged to the maximum diameter 3 μm with a seeded growth method in a semi-batch reacting system. Based on the experiments above, several mechanisms were discussed on the growth process of mesoporous silica spheres in the synthesis.

    Original languageEnglish (US)
    Pages (from-to)558-564
    Number of pages7
    JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
    Volume21
    Issue number3
    StatePublished - May 1 2006

    Fingerprint

    Cationic surfactants
    Silicon Dioxide
    Silica
    Surface-Active Agents
    Alcohols
    Surface active agents
    2-Propanol
    High performance liquid chromatography
    Ammonia
    Specific surface area
    Condensation
    Hydrolysis
    Catalysts
    Water
    Substrates
    Experiments

    Keywords

    • Mesoporous
    • Semi-batch
    • Silica spheres
    • Surfactant

    ASJC Scopus subject areas

    • Materials Science(all)
    • Inorganic Chemistry

    Cite this

    Synthesis of mesoporous silica spheres by using neutral-cationic surfactant and semi-batch growth. / Qiu, Jian Quan; Zhao, Xiang; Jin, Minchao; Cai, Qiang; Li, Heng De.

    In: Wuji Cailiao Xuebao/Journal of Inorganic Materials, Vol. 21, No. 3, 01.05.2006, p. 558-564.

    Research output: Contribution to journalArticle

    Qiu, Jian Quan ; Zhao, Xiang ; Jin, Minchao ; Cai, Qiang ; Li, Heng De. / Synthesis of mesoporous silica spheres by using neutral-cationic surfactant and semi-batch growth. In: Wuji Cailiao Xuebao/Journal of Inorganic Materials. 2006 ; Vol. 21, No. 3. pp. 558-564.
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