High temperature growth of single-walled carbon nanotubes with a narrow chirality distribution by tip-growth mode

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High temperature growth of single-walled carbon nanotubes with a narrow chirality distribution by tip-growth mode. / He, Maoshuai; Yang, Tao; Shang, Danhong; Xin, Benwu; Chernov, Alexander I.; Obraztsova, Elena D.; Sainio, Jani; Wei, Na; Cui, Hongzhi; Jiang, Hua; Kauppinen, Esko.

In: Chemical Engineering Journal, Vol. 341, 01.06.2018, p. 344-350.

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He, Maoshuai ; Yang, Tao ; Shang, Danhong ; Xin, Benwu ; Chernov, Alexander I. ; Obraztsova, Elena D. ; Sainio, Jani ; Wei, Na ; Cui, Hongzhi ; Jiang, Hua ; Kauppinen, Esko. / High temperature growth of single-walled carbon nanotubes with a narrow chirality distribution by tip-growth mode. In: Chemical Engineering Journal. 2018 ; Vol. 341. pp. 344-350.

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@article{88e59842e5654baf8c4d872cca6feaa4,
title = "High temperature growth of single-walled carbon nanotubes with a narrow chirality distribution by tip-growth mode",
abstract = "An MgO supported Co catalyst prepared by atomic layer deposition was applied for the growth of single-walled carbon nanotubes (SWNTs). Different from other catalysts, which generally nucleate SWNTs by base-growth mode, the Co-MgO catalyst uniquely generates SWNTs by tip-growth mode, indicating a weak metal-support interaction. During chemical vapor deposition process, the lift-off of Co nanoparticles from support inhibits the aggregation of Co nanoparticles and favors the synthesis of small-diameter SWNTs with a narrow chirality distribution, even at a high reaction temperature. Particularly, product grown at 800 °C maintains a preferential synthesis of small-diameter (6, 5) SWNTs. The enrichment of (6, 5) SWNT arises from the combination of SWNT-catalyst interface thermodynamics with growth kinetic. The growth dynamics of SWNTs was further investigated by in situ Raman spectroscopy, which revealed that SWNTs with smaller diameters appeared prior to the growth of large-diameter counterparts.",
keywords = "Chirality-selective, Metal-support interaction, Raman spectroscopy, Single-walled carbon nanotube, Temperature-programmed reduction, Tip growth",
author = "Maoshuai He and Tao Yang and Danhong Shang and Benwu Xin and Chernov, {Alexander I.} and Obraztsova, {Elena D.} and Jani Sainio and Na Wei and Hongzhi Cui and Hua Jiang and Esko Kauppinen",
year = "2018",
month = "6",
day = "1",
doi = "10.1016/j.cej.2018.02.051",
language = "English",
volume = "341",
pages = "344--350",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier Science",

}

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TY - JOUR

T1 - High temperature growth of single-walled carbon nanotubes with a narrow chirality distribution by tip-growth mode

AU - He, Maoshuai

AU - Yang, Tao

AU - Shang, Danhong

AU - Xin, Benwu

AU - Chernov, Alexander I.

AU - Obraztsova, Elena D.

AU - Sainio, Jani

AU - Wei, Na

AU - Cui, Hongzhi

AU - Jiang, Hua

AU - Kauppinen, Esko

PY - 2018/6/1

Y1 - 2018/6/1

N2 - An MgO supported Co catalyst prepared by atomic layer deposition was applied for the growth of single-walled carbon nanotubes (SWNTs). Different from other catalysts, which generally nucleate SWNTs by base-growth mode, the Co-MgO catalyst uniquely generates SWNTs by tip-growth mode, indicating a weak metal-support interaction. During chemical vapor deposition process, the lift-off of Co nanoparticles from support inhibits the aggregation of Co nanoparticles and favors the synthesis of small-diameter SWNTs with a narrow chirality distribution, even at a high reaction temperature. Particularly, product grown at 800 °C maintains a preferential synthesis of small-diameter (6, 5) SWNTs. The enrichment of (6, 5) SWNT arises from the combination of SWNT-catalyst interface thermodynamics with growth kinetic. The growth dynamics of SWNTs was further investigated by in situ Raman spectroscopy, which revealed that SWNTs with smaller diameters appeared prior to the growth of large-diameter counterparts.

AB - An MgO supported Co catalyst prepared by atomic layer deposition was applied for the growth of single-walled carbon nanotubes (SWNTs). Different from other catalysts, which generally nucleate SWNTs by base-growth mode, the Co-MgO catalyst uniquely generates SWNTs by tip-growth mode, indicating a weak metal-support interaction. During chemical vapor deposition process, the lift-off of Co nanoparticles from support inhibits the aggregation of Co nanoparticles and favors the synthesis of small-diameter SWNTs with a narrow chirality distribution, even at a high reaction temperature. Particularly, product grown at 800 °C maintains a preferential synthesis of small-diameter (6, 5) SWNTs. The enrichment of (6, 5) SWNT arises from the combination of SWNT-catalyst interface thermodynamics with growth kinetic. The growth dynamics of SWNTs was further investigated by in situ Raman spectroscopy, which revealed that SWNTs with smaller diameters appeared prior to the growth of large-diameter counterparts.

KW - Chirality-selective

KW - Metal-support interaction

KW - Raman spectroscopy

KW - Single-walled carbon nanotube

KW - Temperature-programmed reduction

KW - Tip growth

UR - http://www.scopus.com/inward/record.url?scp=85044768766&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2018.02.051

DO - 10.1016/j.cej.2018.02.051

M3 - Article

VL - 341

SP - 344

EP - 350

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -

ID: 18917012