Synthesis of carbon nanotubes by swirled floating catalyst chemical vapour deposition method

A. S. Abdulkareem, A. S. Afolabi, S. E. Iyuke, H. C. Vz Pienaar

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    A series of developments have been made in synthesizing Carbon Nanotubes (CNTs) by Catalytic Vapour Deposition (CVD) methods since its discovery as a possible route to the large scale and high quality production of CNTs. In this study, CNTs were synthesized continuously in a swirled floating catalytic chemical vapour deposition reactor using acetylene as carbon source, ferrocene as catalyst, with argon and hydrogen as carrier gases within the temperature range of 900-1050 °C. The effects of pyrolysis temperature, acetylene flow rate, hydrogen flow rate, and ratio of flow of acetylene to hydrogen on the rate of production of CNTs were investigated. The CNTs produced were purified with dilute nitric acid and the nature and quality of the CNTs were analysed by TEM, Raman spectrometer, EDX, and TGA. Results obtained revealed that a mixture of single and multi wall carbon nanotubes were produced continuously with a maximum yield rate of 0.31 g/min at 1000 °C and a flow ratio of acetylene to hydrogen of one to five.

    Original languageEnglish
    Pages (from-to)3233-3238
    Number of pages6
    JournalJournal of Nanoscience and Nanotechnology
    Volume7
    Issue number9
    DOIs
    Publication statusPublished - Sep 2007

    Fingerprint

    Carbon Nanotubes
    Chemical vapor deposition
    Carbon nanotubes
    Acetylene
    Catalysts
    Hydrogen
    Flow rate
    Nitric Acid
    Vapor deposition
    Temperature
    Argon
    Nitric acid
    Spectrometers
    Energy dispersive spectroscopy
    Pyrolysis
    Carbon
    Gases
    Transmission electron microscopy

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Materials Science(all)
    • Materials Science (miscellaneous)
    • Engineering (miscellaneous)

    Cite this

    Abdulkareem, A. S. ; Afolabi, A. S. ; Iyuke, S. E. ; Vz Pienaar, H. C. / Synthesis of carbon nanotubes by swirled floating catalyst chemical vapour deposition method. In: Journal of Nanoscience and Nanotechnology. 2007 ; Vol. 7, No. 9. pp. 3233-3238.
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    abstract = "A series of developments have been made in synthesizing Carbon Nanotubes (CNTs) by Catalytic Vapour Deposition (CVD) methods since its discovery as a possible route to the large scale and high quality production of CNTs. In this study, CNTs were synthesized continuously in a swirled floating catalytic chemical vapour deposition reactor using acetylene as carbon source, ferrocene as catalyst, with argon and hydrogen as carrier gases within the temperature range of 900-1050 °C. The effects of pyrolysis temperature, acetylene flow rate, hydrogen flow rate, and ratio of flow of acetylene to hydrogen on the rate of production of CNTs were investigated. The CNTs produced were purified with dilute nitric acid and the nature and quality of the CNTs were analysed by TEM, Raman spectrometer, EDX, and TGA. Results obtained revealed that a mixture of single and multi wall carbon nanotubes were produced continuously with a maximum yield rate of 0.31 g/min at 1000 °C and a flow ratio of acetylene to hydrogen of one to five.",
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    Synthesis of carbon nanotubes by swirled floating catalyst chemical vapour deposition method. / Abdulkareem, A. S.; Afolabi, A. S.; Iyuke, S. E.; Vz Pienaar, H. C.

    In: Journal of Nanoscience and Nanotechnology, Vol. 7, No. 9, 09.2007, p. 3233-3238.

    Research output: Contribution to journalArticle

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