Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

Nguyen Viet Long, Michitaka Ohtaki, Masayuki Nogami, Tong Duy Hien

    研究成果: ジャーナルへの寄稿記事

    46 引用 (Scopus)

    抄録

    In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO3 and poly(vinylpyrrolidone) (PVP) in the reduction of H2PtCl6 with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO3. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.

    元の言語英語
    ページ(範囲)1373-1386
    ページ数14
    ジャーナルColloid and Polymer Science
    289
    発行部数12
    DOI
    出版物ステータス出版済み - 8 2011

    Fingerprint

    Methanol
    heat treatment
    methyl alcohol
    Heat treatment
    Nanoparticles
    washing
    Oxidation
    nanoparticles
    oxidation
    Washing
    polymers
    Polymers
    transmission electron microscopy
    Ethylene Glycol
    Polyols
    High resolution transmission electron microscopy
    Ethylene glycol
    Byproducts
    glycols
    ethylene

    All Science Journal Classification (ASJC) codes

    • Physical and Theoretical Chemistry
    • Polymers and Plastics
    • Materials Chemistry
    • Colloid and Surface Chemistry

    これを引用

    Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation. / Long, Nguyen Viet; Ohtaki, Michitaka; Nogami, Masayuki; Hien, Tong Duy.

    :: Colloid and Polymer Science, 巻 289, 番号 12, 08.2011, p. 1373-1386.

    研究成果: ジャーナルへの寄稿記事

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    abstract = "In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO3 and poly(vinylpyrrolidone) (PVP) in the reduction of H2PtCl6 with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO3. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.",
    author = "Long, {Nguyen Viet} and Michitaka Ohtaki and Masayuki Nogami and Hien, {Tong Duy}",
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    AU - Ohtaki, Michitaka

    AU - Nogami, Masayuki

    AU - Hien, Tong Duy

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