Preparation of a nanocomposite consisting of a siloxane network and perovskite-related nanosheets via a sol-gel process

Seiichi Tahara, Takafumi Okamoto, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    A nanocomposite possessing perovskite-related nanosheets dispersed in a siloxane network was prepared by cohydrolysis of the n-decoxy derivative of an ion-exchangeable layered perovskite, HCa2Nb3O10·xH2O (HCaNb), and tetramethoxysilane (TMOS) via a sol-gel process involving exfoliation. In the X-ray diffraction (XRD) pattern of the product after drying for 1 d, the (0 0 l) reflections disappeared. The transmission electron microscopy (TEM) image of the product after drying for 1 d showed dark lines with a thickness of 1.5 nm, which was consistent with the thickness of an individual nanosheet, indicating exfoliation of HCaNb. In the XRD patterns of the reaction products of the n-decoxy derivative of HCaNb and TMOS before drying and after drying for 60 min, (0 0 l) reflections were detected. After drying for 80 min, the intensity of the (0 0 l) reflections decreased. The intensity decreased with an increase in the drying time, indicating that the exfoliation of HCaNb occurred during the drying process.

    Original languageEnglish
    Pages (from-to)446-450
    Number of pages5
    JournalScience and Technology of Advanced Materials
    Volume7
    Issue number5
    DOIs
    Publication statusPublished - 2006 Jul

    Fingerprint

    Siloxanes
    Nanosheets
    Perovskite
    Sol-gel process
    Nanocomposites
    Drying
    Diffraction patterns
    Derivatives
    X ray diffraction
    perovskite
    Reaction products
    Ions
    Transmission electron microscopy

    Keywords

    • Dion-Jacobson phase
    • Exfoliation
    • Grafting reaction
    • Intercalation
    • Layered perovskite
    • Metal alkoxide
    • Nanocomposite
    • Nanosheet
    • Surface modification

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Preparation of a nanocomposite consisting of a siloxane network and perovskite-related nanosheets via a sol-gel process. / Tahara, Seiichi; Okamoto, Takafumi; Sugahara, Yoshiyuki.

    In: Science and Technology of Advanced Materials, Vol. 7, No. 5, 07.2006, p. 446-450.

    Research output: Contribution to journalArticle

    @article{5cee522bc26745a9bc6c6b9a1e6745d6,
    title = "Preparation of a nanocomposite consisting of a siloxane network and perovskite-related nanosheets via a sol-gel process",
    abstract = "A nanocomposite possessing perovskite-related nanosheets dispersed in a siloxane network was prepared by cohydrolysis of the n-decoxy derivative of an ion-exchangeable layered perovskite, HCa2Nb3O10·xH2O (HCaNb), and tetramethoxysilane (TMOS) via a sol-gel process involving exfoliation. In the X-ray diffraction (XRD) pattern of the product after drying for 1 d, the (0 0 l) reflections disappeared. The transmission electron microscopy (TEM) image of the product after drying for 1 d showed dark lines with a thickness of 1.5 nm, which was consistent with the thickness of an individual nanosheet, indicating exfoliation of HCaNb. In the XRD patterns of the reaction products of the n-decoxy derivative of HCaNb and TMOS before drying and after drying for 60 min, (0 0 l) reflections were detected. After drying for 80 min, the intensity of the (0 0 l) reflections decreased. The intensity decreased with an increase in the drying time, indicating that the exfoliation of HCaNb occurred during the drying process.",
    keywords = "Dion-Jacobson phase, Exfoliation, Grafting reaction, Intercalation, Layered perovskite, Metal alkoxide, Nanocomposite, Nanosheet, Surface modification",
    author = "Seiichi Tahara and Takafumi Okamoto and Yoshiyuki Sugahara",
    year = "2006",
    month = "7",
    doi = "10.1016/j.stam.2006.05.002",
    language = "English",
    volume = "7",
    pages = "446--450",
    journal = "Science and Technology of Advanced Materials",
    issn = "1468-6996",
    publisher = "IOP Publishing Ltd.",
    number = "5",

    }

    TY - JOUR

    T1 - Preparation of a nanocomposite consisting of a siloxane network and perovskite-related nanosheets via a sol-gel process

    AU - Tahara, Seiichi

    AU - Okamoto, Takafumi

    AU - Sugahara, Yoshiyuki

    PY - 2006/7

    Y1 - 2006/7

    N2 - A nanocomposite possessing perovskite-related nanosheets dispersed in a siloxane network was prepared by cohydrolysis of the n-decoxy derivative of an ion-exchangeable layered perovskite, HCa2Nb3O10·xH2O (HCaNb), and tetramethoxysilane (TMOS) via a sol-gel process involving exfoliation. In the X-ray diffraction (XRD) pattern of the product after drying for 1 d, the (0 0 l) reflections disappeared. The transmission electron microscopy (TEM) image of the product after drying for 1 d showed dark lines with a thickness of 1.5 nm, which was consistent with the thickness of an individual nanosheet, indicating exfoliation of HCaNb. In the XRD patterns of the reaction products of the n-decoxy derivative of HCaNb and TMOS before drying and after drying for 60 min, (0 0 l) reflections were detected. After drying for 80 min, the intensity of the (0 0 l) reflections decreased. The intensity decreased with an increase in the drying time, indicating that the exfoliation of HCaNb occurred during the drying process.

    AB - A nanocomposite possessing perovskite-related nanosheets dispersed in a siloxane network was prepared by cohydrolysis of the n-decoxy derivative of an ion-exchangeable layered perovskite, HCa2Nb3O10·xH2O (HCaNb), and tetramethoxysilane (TMOS) via a sol-gel process involving exfoliation. In the X-ray diffraction (XRD) pattern of the product after drying for 1 d, the (0 0 l) reflections disappeared. The transmission electron microscopy (TEM) image of the product after drying for 1 d showed dark lines with a thickness of 1.5 nm, which was consistent with the thickness of an individual nanosheet, indicating exfoliation of HCaNb. In the XRD patterns of the reaction products of the n-decoxy derivative of HCaNb and TMOS before drying and after drying for 60 min, (0 0 l) reflections were detected. After drying for 80 min, the intensity of the (0 0 l) reflections decreased. The intensity decreased with an increase in the drying time, indicating that the exfoliation of HCaNb occurred during the drying process.

    KW - Dion-Jacobson phase

    KW - Exfoliation

    KW - Grafting reaction

    KW - Intercalation

    KW - Layered perovskite

    KW - Metal alkoxide

    KW - Nanocomposite

    KW - Nanosheet

    KW - Surface modification

    UR - http://www.scopus.com/inward/record.url?scp=33747174256&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=33747174256&partnerID=8YFLogxK

    U2 - 10.1016/j.stam.2006.05.002

    DO - 10.1016/j.stam.2006.05.002

    M3 - Article

    AN - SCOPUS:33747174256

    VL - 7

    SP - 446

    EP - 450

    JO - Science and Technology of Advanced Materials

    JF - Science and Technology of Advanced Materials

    SN - 1468-6996

    IS - 5

    ER -