Solution conductivity as a key factor for thin silica coating on colloidal silver

Ken Ichi Nomura, Shinji Fujii, Yoshimichi Ohki, Koichi Awazu, Makoto Fujimaki, Nobuko Fukuda, Tsutomu Hirakawa

    研究成果: Article

    抄録

    In order to utilize silver nanoparticles for various applications such as photocatalysts while maintaining their chemical stability, enhanced electric fields on the nanoparticle surfaces induced by localized surface plasmon excitation must be used effectively. For satisfying these requirements, an ultrathin silica coating with a thickness of only a few nm was formed around silver nanoparticles by a chemical reaction in a solution, while parameters such as the amount of sodium silicate and the number of dialysis procedures performed were changed. As a result, it was found that a key factor for obtaining stable thin-silica-coated silver nanoparticles is the conductivity of the solution. Using a solution with an appropriate conductivity above 2.7 mS/m, silica films can be coated on silver nanoparticles without causing deterioration of the plasmonic activity resulting from the aggregation of silver.

    元の言語English
    ジャーナルJapanese Journal of Applied Physics
    48
    発行部数6 PART 2
    DOI
    出版物ステータスPublished - 2009 6

    Fingerprint

    Silver
    silver
    Silica
    Nanoparticles
    silicon dioxide
    coatings
    Coatings
    conductivity
    nanoparticles
    sodium silicates
    dialysis
    Dialysis
    Chemical stability
    Photocatalysts
    deterioration
    Silicates
    Deterioration
    Chemical reactions
    chemical reactions
    Agglomeration

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    これを引用

    Solution conductivity as a key factor for thin silica coating on colloidal silver. / Nomura, Ken Ichi; Fujii, Shinji; Ohki, Yoshimichi; Awazu, Koichi; Fujimaki, Makoto; Fukuda, Nobuko; Hirakawa, Tsutomu.

    :: Japanese Journal of Applied Physics, 巻 48, 番号 6 PART 2, 06.2009.

    研究成果: Article

    Nomura, Ken Ichi ; Fujii, Shinji ; Ohki, Yoshimichi ; Awazu, Koichi ; Fujimaki, Makoto ; Fukuda, Nobuko ; Hirakawa, Tsutomu. / Solution conductivity as a key factor for thin silica coating on colloidal silver. :: Japanese Journal of Applied Physics. 2009 ; 巻 48, 番号 6 PART 2.
    @article{7761f7c0d8c045a895a96432a7307e97,
    title = "Solution conductivity as a key factor for thin silica coating on colloidal silver",
    abstract = "In order to utilize silver nanoparticles for various applications such as photocatalysts while maintaining their chemical stability, enhanced electric fields on the nanoparticle surfaces induced by localized surface plasmon excitation must be used effectively. For satisfying these requirements, an ultrathin silica coating with a thickness of only a few nm was formed around silver nanoparticles by a chemical reaction in a solution, while parameters such as the amount of sodium silicate and the number of dialysis procedures performed were changed. As a result, it was found that a key factor for obtaining stable thin-silica-coated silver nanoparticles is the conductivity of the solution. Using a solution with an appropriate conductivity above 2.7 mS/m, silica films can be coated on silver nanoparticles without causing deterioration of the plasmonic activity resulting from the aggregation of silver.",
    author = "Nomura, {Ken Ichi} and Shinji Fujii and Yoshimichi Ohki and Koichi Awazu and Makoto Fujimaki and Nobuko Fukuda and Tsutomu Hirakawa",
    year = "2009",
    month = "6",
    doi = "10.1143/JJAP.48.06FE04",
    language = "English",
    volume = "48",
    journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
    issn = "0021-4922",
    publisher = "Japan Society of Applied Physics",
    number = "6 PART 2",

    }

    TY - JOUR

    T1 - Solution conductivity as a key factor for thin silica coating on colloidal silver

    AU - Nomura, Ken Ichi

    AU - Fujii, Shinji

    AU - Ohki, Yoshimichi

    AU - Awazu, Koichi

    AU - Fujimaki, Makoto

    AU - Fukuda, Nobuko

    AU - Hirakawa, Tsutomu

    PY - 2009/6

    Y1 - 2009/6

    N2 - In order to utilize silver nanoparticles for various applications such as photocatalysts while maintaining their chemical stability, enhanced electric fields on the nanoparticle surfaces induced by localized surface plasmon excitation must be used effectively. For satisfying these requirements, an ultrathin silica coating with a thickness of only a few nm was formed around silver nanoparticles by a chemical reaction in a solution, while parameters such as the amount of sodium silicate and the number of dialysis procedures performed were changed. As a result, it was found that a key factor for obtaining stable thin-silica-coated silver nanoparticles is the conductivity of the solution. Using a solution with an appropriate conductivity above 2.7 mS/m, silica films can be coated on silver nanoparticles without causing deterioration of the plasmonic activity resulting from the aggregation of silver.

    AB - In order to utilize silver nanoparticles for various applications such as photocatalysts while maintaining their chemical stability, enhanced electric fields on the nanoparticle surfaces induced by localized surface plasmon excitation must be used effectively. For satisfying these requirements, an ultrathin silica coating with a thickness of only a few nm was formed around silver nanoparticles by a chemical reaction in a solution, while parameters such as the amount of sodium silicate and the number of dialysis procedures performed were changed. As a result, it was found that a key factor for obtaining stable thin-silica-coated silver nanoparticles is the conductivity of the solution. Using a solution with an appropriate conductivity above 2.7 mS/m, silica films can be coated on silver nanoparticles without causing deterioration of the plasmonic activity resulting from the aggregation of silver.

    UR - http://www.scopus.com/inward/record.url?scp=70249133352&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=70249133352&partnerID=8YFLogxK

    U2 - 10.1143/JJAP.48.06FE04

    DO - 10.1143/JJAP.48.06FE04

    M3 - Article

    AN - SCOPUS:70249133352

    VL - 48

    JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

    JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

    SN - 0021-4922

    IS - 6 PART 2

    ER -