Fabrication of a Pt film with a well-defined hierarchical pore system via "solvent-evaporation-mediated direct physical casting"

Yusuke Yamauchi, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    40 Citations (Scopus)

    Abstract

    We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.

    Original languageEnglish
    Pages (from-to)1677-1682
    Number of pages6
    JournalElectrochemistry Communications
    Volume8
    Issue number10
    DOIs
    Publication statusPublished - 2006 Oct

    Fingerprint

    Casting
    Evaporation
    Fabrication
    Nanoparticles
    Liquid Crystals
    Sulfuric acid
    Liquid crystals
    Microscopic examination
    Scanning
    Thin films
    Crystals
    Scanning electron microscopy
    sulfuric acid

    Keywords

    • Colloidal crystal templating
    • Electrode material
    • Hierarchical structure
    • Lyotropic liquid crystal
    • Mesoporous metal
    • Platinum

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Analytical Chemistry
    • Electrochemistry

    Cite this

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    abstract = "We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.",
    keywords = "Colloidal crystal templating, Electrode material, Hierarchical structure, Lyotropic liquid crystal, Mesoporous metal, Platinum",
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    AU - Kuroda, Kazuyuki

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    N2 - We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.

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    KW - Lyotropic liquid crystal

    KW - Mesoporous metal

    KW - Platinum

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