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Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames

Synthesis of carbon nanotubes (CNTs) was performed by using a laminar premixed flame burner at open atmospheric condition. The growth of CNTs on the substrate was supported catalytically by a transition metal under high temperature, hydrocarbon-rich environment. Analysis of the CNTs using high resol...

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Main Authors: Chong, C. T., Tan, W. H., Lee, S. L., Chong, W. W. F., Lam, S. S., Valera-Medina, A.
Format: Article
Published: Elsevier Ltd 2017
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/76923/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020396464&doi=10.1016%2fj.matchemphys.2017.05.036&partnerID=40&md5=fd75b0d759f2aafee9183e0a029cf3e7
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spelling my.utm.769232018-05-31T09:31:37Z http://eprints.utm.my/id/eprint/76923/ Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames Chong, C. T. Tan, W. H. Lee, S. L. Chong, W. W. F. Lam, S. S. Valera-Medina, A. QD Chemistry Synthesis of carbon nanotubes (CNTs) was performed by using a laminar premixed flame burner at open atmospheric condition. The growth of CNTs on the substrate was supported catalytically by a transition metal under high temperature, hydrocarbon-rich environment. Analysis of the CNTs using high resolution electron microscope reveals the structure of synthesised nano-materials in disarray, clustered and tubular form. The graphitic structure of the CNTs are rather similar for all fuel-rich equivalence ratios tested, with an average diameter of ∼11–13 nm. Removal of the amorphous carbon and catalyst in the CNTs was performed via purification treatment using H2O2 and HCl solutions. Detail characterisation indicates the oxidation temperature of purified CNTs ranges between 497 and 529 °C. Deconvolution of the Raman spectra in the range of 900–1800 cm−1 shows the distinct characteristic bands of CNTs with IG/ID ratio of 0.66–0.72 for all the samples tested. In addition, the high level carbon concentration and sp2 C–C bond in the CNTs is shown by X-ray photoelectron spectroscopy analysis. The present study demonstrates that CNTs can be effectively synthesised from fuel-rich hydrocarbon flames at ϕ = 1.8–2.0 supported by nickel-based substrate. Elsevier Ltd 2017 Article PeerReviewed Chong, C. T. and Tan, W. H. and Lee, S. L. and Chong, W. W. F. and Lam, S. S. and Valera-Medina, A. (2017) Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames. Materials Chemistry and Physics, 197 . pp. 246-255. ISSN 0254-0584 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020396464&doi=10.1016%2fj.matchemphys.2017.05.036&partnerID=40&md5=fd75b0d759f2aafee9183e0a029cf3e7 DOI:0.1016/j.matchemphys.2017.05.036
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QD Chemistry
spellingShingle QD Chemistry
Chong, C. T.
Tan, W. H.
Lee, S. L.
Chong, W. W. F.
Lam, S. S.
Valera-Medina, A.
Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
description Synthesis of carbon nanotubes (CNTs) was performed by using a laminar premixed flame burner at open atmospheric condition. The growth of CNTs on the substrate was supported catalytically by a transition metal under high temperature, hydrocarbon-rich environment. Analysis of the CNTs using high resolution electron microscope reveals the structure of synthesised nano-materials in disarray, clustered and tubular form. The graphitic structure of the CNTs are rather similar for all fuel-rich equivalence ratios tested, with an average diameter of ∼11–13 nm. Removal of the amorphous carbon and catalyst in the CNTs was performed via purification treatment using H2O2 and HCl solutions. Detail characterisation indicates the oxidation temperature of purified CNTs ranges between 497 and 529 °C. Deconvolution of the Raman spectra in the range of 900–1800 cm−1 shows the distinct characteristic bands of CNTs with IG/ID ratio of 0.66–0.72 for all the samples tested. In addition, the high level carbon concentration and sp2 C–C bond in the CNTs is shown by X-ray photoelectron spectroscopy analysis. The present study demonstrates that CNTs can be effectively synthesised from fuel-rich hydrocarbon flames at ϕ = 1.8–2.0 supported by nickel-based substrate.
format Article
author Chong, C. T.
Tan, W. H.
Lee, S. L.
Chong, W. W. F.
Lam, S. S.
Valera-Medina, A.
author_facet Chong, C. T.
Tan, W. H.
Lee, S. L.
Chong, W. W. F.
Lam, S. S.
Valera-Medina, A.
author_sort Chong, C. T.
title Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
title_short Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
title_full Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
title_fullStr Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
title_full_unstemmed Morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
title_sort morphology and growth of carbon nanotubes catalytically synthesised by premixed hydrocarbon-rich flames
publisher Elsevier Ltd
publishDate 2017
url http://eprints.utm.my/id/eprint/76923/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020396464&doi=10.1016%2fj.matchemphys.2017.05.036&partnerID=40&md5=fd75b0d759f2aafee9183e0a029cf3e7
_version_ 1643657448735637504
score 13.211869

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