Preparation of size-controlled monodisperse colloidal mesoporous silica nanoparticles and fabrication of colloidal crystals

Eisuke Yamamoto, Masaki Kitahara, Takuya Tsumura, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    Although mesoporous silica particles are useful building blocks for colloidal crystals, mesoporous silica nanoparticles smaller than 100 nm with sufficient monodispersity and colloidal stability to enable thermodynamic assemblies have not been reported. Here, we report that highly monodisperse colloidal mesoporous silica nanoparticles (CMS) can be prepared by combining the preparation of colloidal mesoporous silica nanoparticles with a shortened nucleation time. The nanoparticles exhibited a uniform shape and relatively smooth surface because an undesirable aggregate dispersion process was avoided. In addition, the diameter of the nanoparticles was controlled by seed-growth without spontaneous nucleation, which enabled the investigation of fundamental CMS properties. Using monodisperse CMS, the dependence of the ζ-potential of CMS on the diameter was revealed. Colloidal crystals composed of mesoporous silica nanoparticles were fabricated by drying the colloidal solution. This is the first report regarding the fabrication of colloidal crystals composed of mesoporous silica nanoparticles with a small particle size.

    Original languageEnglish
    Pages (from-to)2927-2933
    Number of pages7
    JournalChemistry of Materials
    Volume26
    Issue number9
    DOIs
    Publication statusPublished - 2014 May 13

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    Silicon Dioxide
    Silica
    Nanoparticles
    Fabrication
    Crystals
    Nucleation
    Seed
    Drying
    Particle size
    Thermodynamics

    ASJC Scopus subject areas

    • Materials Chemistry
    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Preparation of size-controlled monodisperse colloidal mesoporous silica nanoparticles and fabrication of colloidal crystals. / Yamamoto, Eisuke; Kitahara, Masaki; Tsumura, Takuya; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 26, No. 9, 13.05.2014, p. 2927-2933.

    Research output: Contribution to journalArticle

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