Preparation of highly controlled nanostructured Au within mesopores using reductive deposition in non-polar environments

Masaki Kitahara, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    This paper describes a sophisticated and unique method of Au deposition exclusively inside mesoporous silica, in clear contrast to general methods requiring surface modification with organic functional groups interacting with Au. Reductive deposition using hexane and 1,1,3,3-tetramethydisiloxane as solvent and reducing agent, respectively, was very successful in the inside deposition of Au in two-dimensional hexagonal mesoporous silica (SBA-15). This result was attributed to the suppression of the migration of Au species (Au ions, atoms, and clusters) inside SBA-15 by forcibly locating Au species near the relatively polar mesopore surfaces in the presence of highly non-polar compounds in the mesochannels. Au nanorods replicated from the pore shape of SBA-15 were prepared by reductive deposition, while Au nanoparticles were selectively formed by performing the deposition in the presence of hexadecyltrimethylammonium bromide, which shows promise in the further development of precise design strategies for nanostructured Au.

    Original languageEnglish
    Pages (from-to)27201-27206
    Number of pages6
    JournalRSC Advances
    Volume4
    Issue number52
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Silicon Dioxide
    Silica
    Reducing Agents
    Hexanes
    Reducing agents
    Hexane
    Nanorods
    Functional groups
    Surface treatment
    Ions
    Nanoparticles
    Atoms
    SBA-15
    cetrimonium

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Preparation of highly controlled nanostructured Au within mesopores using reductive deposition in non-polar environments. / Kitahara, Masaki; Kuroda, Kazuyuki.

    In: RSC Advances, Vol. 4, No. 52, 2014, p. 27201-27206.

    Research output: Contribution to journalArticle

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