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    Synthesis of single-walled carbon nanotubes in rich hydrogen/air flames

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    C Zhang et al. MAC_2020.pdf
    Embargo:
    2021-06-27
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    1.868Mb
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    Authors
    Zhang, Cen
    Tian, Bo
    Chong, Cheng Tung
    Ding, Boning
    Fan, Luming
    Chang, Xin
    Simone, Hochgreb
    Affiliation
    University of Cambridge
    University of Derby
    Shanghai Jiao Tong University
    Issue Date
    2020-06-27
    
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    Abstract
    We explore the production of single-walled carbon nanotubes (CNTs) in a stream surrounded by rich premixedlaminar H2/air flames using a feedstock containing ethanol and ferrocene. The as-produced nanomaterialswere characterised by Raman spectroscopy, transmission electron microscopy, scanning electron microscopyand X-ray diffraction. A formation window of equivalence ratios of 1.00–1.20 was identified, and single-walledCNT bundles with individual CNTs of an average diameter of 1 nm were observed. The formation of CNTswas accompanied by the production of highly crystalline Fe3O4nanoparticles of a size of 20–100 nm. Theinvestigation of the limiting factors for the CNT synthesis was carried out systematically, assisted by numericalmodelling. We conclude that the key factors affecting CNT synthesis are the surrounding flame temperatures and the concentration of carbon available for CNT nucleation.
    Citation
    Zhang, C., Tian, B., Chong, C.T., Ding, B., Fan, L., Chang, X. and Hochgreb, S., (2020). 'Synthesis of single-walled carbon nanotubes in rich hydrogen/air flames'. Materials Chemistry and Physics, 254, pp. 1-8.
    Publisher
    Elsevier
    Journal
    Materials Chemistry and Physics
    URI
    http://hdl.handle.net/10545/624978
    DOI
    10.1016/j.matchemphys.2020.123479
    Additional Links
    https://doi.org/10.1016/j.matchemphys.2020.123479
    Type
    Article
    Language
    en
    ISSN
    0254-0584
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.matchemphys.2020.123479
    Scopus Count
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    Department of Mechanical Engineering & the Built Environment

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