Formation mechanism of carbon nanotubes in the gas-phase synthesis from colloidal solutions of nanoparticles

Hiroki Ago, Satoshi Ohshima, Kazuhito Tsukuagoshi, Masaharu Tsuji, Motoo Yumura

    Research output: Contribution to journalConference article

    17 Citations (Scopus)

    Abstract

    Single- and multi-wall carbon nanotubes have been synthesized by the gas-phase catalytic reaction of colloidal solutions of metal nanoparticles using a vertical flow reactor. The reverse micelle solution of the Co-Mo nanoparticles with the mean diameter of 11 nm dissolved in toluene was injected directly into the reactor maintained at 1200 °C. The nanoparticles and the solvent act as the catalyst and carbon source, respectively. When the concentration of the thiophene additive is low (1 wt.%), the formation of SWNT bundles preferentially occurred. The SWNT bundles were present together with the relatively small metal nanoparticles with the diameter of 0.5-5.5 nm. It is likely that the original nanoparticles with the diameter of 11 nm break into smaller ones, 1-2 nm diameters, which is suitable for the SWNT growth. The synactic effect of Co and Mo was also observed.

    Original languageEnglish
    Pages (from-to)128-132
    Number of pages5
    JournalCurrent Applied Physics
    Volume5
    Issue number2
    DOIs
    Publication statusPublished - Feb 2005
    EventIndo-Japan Workshop on Advanced Molecular Electronics - Kitakyushu, Japan
    Duration: Dec 11 2003Dec 12 2003

    Fingerprint

    Carbon Nanotubes
    Carbon nanotubes
    Metal nanoparticles
    Gases
    carbon nanotubes
    vapor phases
    Nanoparticles
    nanoparticles
    synthesis
    Thiophenes
    bundles
    Toluene
    Micelles
    Thiophene
    reactors
    Carbon
    thiophenes
    Catalysts
    metals
    toluene

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Physics and Astronomy(all)

    Cite this

    Formation mechanism of carbon nanotubes in the gas-phase synthesis from colloidal solutions of nanoparticles. / Ago, Hiroki; Ohshima, Satoshi; Tsukuagoshi, Kazuhito; Tsuji, Masaharu; Yumura, Motoo.

    In: Current Applied Physics, Vol. 5, No. 2, 02.2005, p. 128-132.

    Research output: Contribution to journalConference article

    Ago, Hiroki ; Ohshima, Satoshi ; Tsukuagoshi, Kazuhito ; Tsuji, Masaharu ; Yumura, Motoo. / Formation mechanism of carbon nanotubes in the gas-phase synthesis from colloidal solutions of nanoparticles. In: Current Applied Physics. 2005 ; Vol. 5, No. 2. pp. 128-132.
    @article{fbec6872f39d4278a285c3d4015e0e96,
    title = "Formation mechanism of carbon nanotubes in the gas-phase synthesis from colloidal solutions of nanoparticles",
    abstract = "Single- and multi-wall carbon nanotubes have been synthesized by the gas-phase catalytic reaction of colloidal solutions of metal nanoparticles using a vertical flow reactor. The reverse micelle solution of the Co-Mo nanoparticles with the mean diameter of 11 nm dissolved in toluene was injected directly into the reactor maintained at 1200 °C. The nanoparticles and the solvent act as the catalyst and carbon source, respectively. When the concentration of the thiophene additive is low (1 wt.{\%}), the formation of SWNT bundles preferentially occurred. The SWNT bundles were present together with the relatively small metal nanoparticles with the diameter of 0.5-5.5 nm. It is likely that the original nanoparticles with the diameter of 11 nm break into smaller ones, 1-2 nm diameters, which is suitable for the SWNT growth. The synactic effect of Co and Mo was also observed.",
    author = "Hiroki Ago and Satoshi Ohshima and Kazuhito Tsukuagoshi and Masaharu Tsuji and Motoo Yumura",
    year = "2005",
    month = "2",
    doi = "10.1016/j.cap.2004.06.004",
    language = "English",
    volume = "5",
    pages = "128--132",
    journal = "Current Applied Physics",
    issn = "1567-1739",
    publisher = "Elsevier",
    number = "2",

    }

    TY - JOUR

    T1 - Formation mechanism of carbon nanotubes in the gas-phase synthesis from colloidal solutions of nanoparticles

    AU - Ago, Hiroki

    AU - Ohshima, Satoshi

    AU - Tsukuagoshi, Kazuhito

    AU - Tsuji, Masaharu

    AU - Yumura, Motoo

    PY - 2005/2

    Y1 - 2005/2

    N2 - Single- and multi-wall carbon nanotubes have been synthesized by the gas-phase catalytic reaction of colloidal solutions of metal nanoparticles using a vertical flow reactor. The reverse micelle solution of the Co-Mo nanoparticles with the mean diameter of 11 nm dissolved in toluene was injected directly into the reactor maintained at 1200 °C. The nanoparticles and the solvent act as the catalyst and carbon source, respectively. When the concentration of the thiophene additive is low (1 wt.%), the formation of SWNT bundles preferentially occurred. The SWNT bundles were present together with the relatively small metal nanoparticles with the diameter of 0.5-5.5 nm. It is likely that the original nanoparticles with the diameter of 11 nm break into smaller ones, 1-2 nm diameters, which is suitable for the SWNT growth. The synactic effect of Co and Mo was also observed.

    AB - Single- and multi-wall carbon nanotubes have been synthesized by the gas-phase catalytic reaction of colloidal solutions of metal nanoparticles using a vertical flow reactor. The reverse micelle solution of the Co-Mo nanoparticles with the mean diameter of 11 nm dissolved in toluene was injected directly into the reactor maintained at 1200 °C. The nanoparticles and the solvent act as the catalyst and carbon source, respectively. When the concentration of the thiophene additive is low (1 wt.%), the formation of SWNT bundles preferentially occurred. The SWNT bundles were present together with the relatively small metal nanoparticles with the diameter of 0.5-5.5 nm. It is likely that the original nanoparticles with the diameter of 11 nm break into smaller ones, 1-2 nm diameters, which is suitable for the SWNT growth. The synactic effect of Co and Mo was also observed.

    UR - http://www.scopus.com/inward/record.url?scp=10244279211&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=10244279211&partnerID=8YFLogxK

    U2 - 10.1016/j.cap.2004.06.004

    DO - 10.1016/j.cap.2004.06.004

    M3 - Conference article

    AN - SCOPUS:10244279211

    VL - 5

    SP - 128

    EP - 132

    JO - Current Applied Physics

    JF - Current Applied Physics

    SN - 1567-1739

    IS - 2

    ER -