Selective synthesis of carbon nanotubes and multi-layer graphene by controlling catalyst thickness

Daiyu Kondo, Katsunori Yagi, Motonobu Sato, Mizuhisa Nihei, Yuji Awano, Shintaro Sato, Naoki Yokoyama

    Research output: Contribution to journalArticle

    28 Citations (Scopus)

    Abstract

    Selective synthesis of carbon nanotubes (CNTs) and graphene was achieved by hot-filament chemical vapor deposition (CVD) using iron films as a catalyst at a temperature of 620 °C. The selective synthesis was performed in a very simple way, just by changing the catalyst thickness under the same CVD conditions. Only CNTs were obtained with Fe films of 5 nm and less, while multi-layer graphene was formed with the catalyst films of 20 nm and more. The thickness of multi-layer graphene can also be controlled by controlling the thickness of the catalyst further.

    Original languageEnglish
    Pages (from-to)294-300
    Number of pages7
    JournalChemical Physics Letters
    Volume514
    Issue number4-6
    DOIs
    Publication statusPublished - 2011 Oct 6

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Physical and Theoretical Chemistry

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