Preparation of mesoporous Pt-Ru alloy fibers with tunable compositions via evaporation-mediated direct templating (EDIT) method utilizing porous anodic alumina membranes

Azusa Takai, Takahiro Saida, Wataru Sugimoto, Liang Wang, Yusuke Yamauchi, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    42 Citations (Scopus)

    Abstract

    Synthesis of composition-controlled mesoporous Pt-Ru alloy fibers by a dual-templating method (Yamauchi et al. J. Am.Chem. Soc., 2008, 130, 5426-5427) is demonstrated using lyotropic liquid crystals (LLCs) as mesostructural direct templates and porous anodic alumina membranes (PAAMs) as morphological direct templates. The LLCs, including Pt and Ru species, were formed from diluted precursor solutions inside PAAM channels via the evaporation-mediated direct templating (EDIT) method.ForallPt-Rucompositions, the tubular mesophases in theLLCswere stacked like donutswithin the PAAM channels because of the confined effect. After metal deposition by the vapor infiltration method of dimethylamineborane (DMAB) and subsequent removal of both surfactants and PAAM, mesoporous Pt-Ru fibers with various compositions were successfully prepared. Both the alloy state and themesoporous structures were fully characterized by high-resolution scanning electron microscopy (HRSEM), transmission electronmicroscopy (TEM), energy-dispersive X-ray spectroscopic (EDS) mapping, X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The composition ratios of Pt and Ru in the fibers were tuned by controlling those of the used precursor solutions. The mesoporous structures in the fibers reflected the original LLCmesostructures; however, the ordering of themesoporous structures gradually decreased with the increase in the Ru contents in the precursor solutions.

    Original languageEnglish
    Pages (from-to)3414-3423
    Number of pages10
    JournalChemistry of Materials
    Volume21
    Issue number14
    DOIs
    Publication statusPublished - 2009 Jul 28

    Fingerprint

    Aluminum Oxide
    Evaporation
    Alumina
    Membranes
    Liquid Crystals
    Fibers
    Chemical analysis
    Ion Channels
    Liquid crystals
    High resolution electron microscopy
    Infiltration
    Surface-Active Agents
    Energy dispersive spectroscopy
    Surface active agents
    X ray photoelectron spectroscopy
    Metals
    Vapors
    X rays
    Scanning electron microscopy

    ASJC Scopus subject areas

    • Materials Chemistry
    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Preparation of mesoporous Pt-Ru alloy fibers with tunable compositions via evaporation-mediated direct templating (EDIT) method utilizing porous anodic alumina membranes. / Takai, Azusa; Saida, Takahiro; Sugimoto, Wataru; Wang, Liang; Yamauchi, Yusuke; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 21, No. 14, 28.07.2009, p. 3414-3423.

    Research output: Contribution to journalArticle

    @article{9cb175d198c247548dc9f23d0546f207,
    title = "Preparation of mesoporous Pt-Ru alloy fibers with tunable compositions via evaporation-mediated direct templating (EDIT) method utilizing porous anodic alumina membranes",
    abstract = "Synthesis of composition-controlled mesoporous Pt-Ru alloy fibers by a dual-templating method (Yamauchi et al. J. Am.Chem. Soc., 2008, 130, 5426-5427) is demonstrated using lyotropic liquid crystals (LLCs) as mesostructural direct templates and porous anodic alumina membranes (PAAMs) as morphological direct templates. The LLCs, including Pt and Ru species, were formed from diluted precursor solutions inside PAAM channels via the evaporation-mediated direct templating (EDIT) method.ForallPt-Rucompositions, the tubular mesophases in theLLCswere stacked like donutswithin the PAAM channels because of the confined effect. After metal deposition by the vapor infiltration method of dimethylamineborane (DMAB) and subsequent removal of both surfactants and PAAM, mesoporous Pt-Ru fibers with various compositions were successfully prepared. Both the alloy state and themesoporous structures were fully characterized by high-resolution scanning electron microscopy (HRSEM), transmission electronmicroscopy (TEM), energy-dispersive X-ray spectroscopic (EDS) mapping, X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The composition ratios of Pt and Ru in the fibers were tuned by controlling those of the used precursor solutions. The mesoporous structures in the fibers reflected the original LLCmesostructures; however, the ordering of themesoporous structures gradually decreased with the increase in the Ru contents in the precursor solutions.",
    author = "Azusa Takai and Takahiro Saida and Wataru Sugimoto and Liang Wang and Yusuke Yamauchi and Kazuyuki Kuroda",
    year = "2009",
    month = "7",
    day = "28",
    doi = "10.1021/cm9011926",
    language = "English",
    volume = "21",
    pages = "3414--3423",
    journal = "Chemistry of Materials",
    issn = "0897-4756",
    publisher = "American Chemical Society",
    number = "14",

    }

    TY - JOUR

    T1 - Preparation of mesoporous Pt-Ru alloy fibers with tunable compositions via evaporation-mediated direct templating (EDIT) method utilizing porous anodic alumina membranes

    AU - Takai, Azusa

    AU - Saida, Takahiro

    AU - Sugimoto, Wataru

    AU - Wang, Liang

    AU - Yamauchi, Yusuke

    AU - Kuroda, Kazuyuki

    PY - 2009/7/28

    Y1 - 2009/7/28

    N2 - Synthesis of composition-controlled mesoporous Pt-Ru alloy fibers by a dual-templating method (Yamauchi et al. J. Am.Chem. Soc., 2008, 130, 5426-5427) is demonstrated using lyotropic liquid crystals (LLCs) as mesostructural direct templates and porous anodic alumina membranes (PAAMs) as morphological direct templates. The LLCs, including Pt and Ru species, were formed from diluted precursor solutions inside PAAM channels via the evaporation-mediated direct templating (EDIT) method.ForallPt-Rucompositions, the tubular mesophases in theLLCswere stacked like donutswithin the PAAM channels because of the confined effect. After metal deposition by the vapor infiltration method of dimethylamineborane (DMAB) and subsequent removal of both surfactants and PAAM, mesoporous Pt-Ru fibers with various compositions were successfully prepared. Both the alloy state and themesoporous structures were fully characterized by high-resolution scanning electron microscopy (HRSEM), transmission electronmicroscopy (TEM), energy-dispersive X-ray spectroscopic (EDS) mapping, X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The composition ratios of Pt and Ru in the fibers were tuned by controlling those of the used precursor solutions. The mesoporous structures in the fibers reflected the original LLCmesostructures; however, the ordering of themesoporous structures gradually decreased with the increase in the Ru contents in the precursor solutions.

    AB - Synthesis of composition-controlled mesoporous Pt-Ru alloy fibers by a dual-templating method (Yamauchi et al. J. Am.Chem. Soc., 2008, 130, 5426-5427) is demonstrated using lyotropic liquid crystals (LLCs) as mesostructural direct templates and porous anodic alumina membranes (PAAMs) as morphological direct templates. The LLCs, including Pt and Ru species, were formed from diluted precursor solutions inside PAAM channels via the evaporation-mediated direct templating (EDIT) method.ForallPt-Rucompositions, the tubular mesophases in theLLCswere stacked like donutswithin the PAAM channels because of the confined effect. After metal deposition by the vapor infiltration method of dimethylamineborane (DMAB) and subsequent removal of both surfactants and PAAM, mesoporous Pt-Ru fibers with various compositions were successfully prepared. Both the alloy state and themesoporous structures were fully characterized by high-resolution scanning electron microscopy (HRSEM), transmission electronmicroscopy (TEM), energy-dispersive X-ray spectroscopic (EDS) mapping, X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The composition ratios of Pt and Ru in the fibers were tuned by controlling those of the used precursor solutions. The mesoporous structures in the fibers reflected the original LLCmesostructures; however, the ordering of themesoporous structures gradually decreased with the increase in the Ru contents in the precursor solutions.

    UR - http://www.scopus.com/inward/record.url?scp=67651087113&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=67651087113&partnerID=8YFLogxK

    U2 - 10.1021/cm9011926

    DO - 10.1021/cm9011926

    M3 - Article

    AN - SCOPUS:67651087113

    VL - 21

    SP - 3414

    EP - 3423

    JO - Chemistry of Materials

    JF - Chemistry of Materials

    SN - 0897-4756

    IS - 14

    ER -