Grooves of bundled single-walled carbon nanotubes dramatically enhance the activity of the oxygen reduction reaction

Tsuyohiko Fujigaya, Junichi Morita, Naotoshi Nakashima

    研究成果: Contribution to journalArticle査読

    7 被引用数 (Scopus)

    抄録

    Nitrogen-doped graphitic structures (N-GSs) are promising and cheap catalyst candidates for the oxygen reduction reaction (ORR). In this paper, we describe, first, the synthesis of singlewalled carbon nanotubes (SWNTs) coated by a N-GS (SWNT/NGS) and, second, the dramatic enhancement in the activity of the ORR by using this catalyst relative to that observed for the analogue composite composed of multiwalled carbon nanotubes (MWNTs) coated by a N-GS (i.e., MWNT/N-GS). Scanning electron microscopy and gas-adsorption experiments revealed that the SWNT/N-GS formed a bundled structure and that superior gas adsorption behavior originated from this groove structure. It is assumed that the grooves of the bundled SWNT/N-GS dramatically enhance the activity of the ORR owing to superior O2 adsorption on the grooves.

    本文言語英語
    ページ(範囲)3169-3173
    ページ数5
    ジャーナルChemCatChem
    6
    11
    DOI
    出版ステータス出版済み - 11 2014

    All Science Journal Classification (ASJC) codes

    • 触媒
    • 物理化学および理論化学
    • 有機化学
    • 無機化学

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