Preparation of Ordered Mesoporous Au using Double Gyroid Mesoporous Silica KIT-6 via a Seed-Mediated Growth Process

Yuta Shimasaki, Masaki Kitahara, Miho Shoji, Atsushi Shimojima, Hiroaki Wada, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    Abstract

    Ordered mesoporous Au was prepared using double gyroid (cubic Ia-3d) mesoporous silica KIT-6 as a template. The Au frameworks were formed within the template via a seed-mediated growth process. Au nanoparticles were initially prepared as seeds within the mesopores, and subsequently, they were grown under mild and controlled reducing conditions. The transmission electron micrographs and scanning electron micrographs of mesoporous Au after the removal of the template revealed the formation of mesoporous Au replicas. The small-angle X-ray scattering pattern of mesoporous Au reveals that the obtained mesoporous Au has a cubic I4132 mesostructure, which is different from that of the original template, implying that Au was deposited within only one mesochannel of the two interconnected ones. The seed-mediated growth process is a key factor in the successful formation of ordered mesoporous Au using a mesoporous silica template. Our preparative method can serve as a guide for further development of synthetic and materials chemistry of mesoporous Au.

    Original languageEnglish
    JournalChemistry - An Asian Journal
    DOIs
    Publication statusAccepted/In press - 2018 Jan 1

    Fingerprint

    Silicon Dioxide
    Seed
    Seeds
    Growth
    Electrons
    X ray scattering
    Nanoparticles
    X-Rays
    Scanning

    Keywords

    • gold
    • mesoporous materials
    • nanoparticles
    • nanostructures
    • template synthesis

    ASJC Scopus subject areas

    • Biochemistry
    • Organic Chemistry

    Cite this

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    title = "Preparation of Ordered Mesoporous Au using Double Gyroid Mesoporous Silica KIT-6 via a Seed-Mediated Growth Process",
    abstract = "Ordered mesoporous Au was prepared using double gyroid (cubic Ia-3d) mesoporous silica KIT-6 as a template. The Au frameworks were formed within the template via a seed-mediated growth process. Au nanoparticles were initially prepared as seeds within the mesopores, and subsequently, they were grown under mild and controlled reducing conditions. The transmission electron micrographs and scanning electron micrographs of mesoporous Au after the removal of the template revealed the formation of mesoporous Au replicas. The small-angle X-ray scattering pattern of mesoporous Au reveals that the obtained mesoporous Au has a cubic I4132 mesostructure, which is different from that of the original template, implying that Au was deposited within only one mesochannel of the two interconnected ones. The seed-mediated growth process is a key factor in the successful formation of ordered mesoporous Au using a mesoporous silica template. Our preparative method can serve as a guide for further development of synthetic and materials chemistry of mesoporous Au.",
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    author = "Yuta Shimasaki and Masaki Kitahara and Miho Shoji and Atsushi Shimojima and Hiroaki Wada and Kazuyuki Kuroda",
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    AU - Shoji, Miho

    AU - Shimojima, Atsushi

    AU - Wada, Hiroaki

    AU - Kuroda, Kazuyuki

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    AB - Ordered mesoporous Au was prepared using double gyroid (cubic Ia-3d) mesoporous silica KIT-6 as a template. The Au frameworks were formed within the template via a seed-mediated growth process. Au nanoparticles were initially prepared as seeds within the mesopores, and subsequently, they were grown under mild and controlled reducing conditions. The transmission electron micrographs and scanning electron micrographs of mesoporous Au after the removal of the template revealed the formation of mesoporous Au replicas. The small-angle X-ray scattering pattern of mesoporous Au reveals that the obtained mesoporous Au has a cubic I4132 mesostructure, which is different from that of the original template, implying that Au was deposited within only one mesochannel of the two interconnected ones. The seed-mediated growth process is a key factor in the successful formation of ordered mesoporous Au using a mesoporous silica template. Our preparative method can serve as a guide for further development of synthetic and materials chemistry of mesoporous Au.

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