Linking growth mode to lengths of single-walled carbon nanotubes

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Linking growth mode to lengths of single-walled carbon nanotubes. / He, Maoshuai; Magnin, Yann; Amara, Hakim; Jiang, Hua; Cui, Hongzhi; Fossard, Frédéric; Castan, Alice; Kauppinen, Esko; Loiseau, Annick; Bichara, Christophe.

In: Carbon, Vol. 113, 01.03.2017, p. 231-236.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

He, M, Magnin, Y, Amara, H, Jiang, H, Cui, H, Fossard, F, Castan, A, Kauppinen, E, Loiseau, A & Bichara, C 2017, 'Linking growth mode to lengths of single-walled carbon nanotubes' Carbon, vol. 113, pp. 231-236. https://doi.org/10.1016/j.carbon.2016.11.057

APA

He, M., Magnin, Y., Amara, H., Jiang, H., Cui, H., Fossard, F., ... Bichara, C. (2017). Linking growth mode to lengths of single-walled carbon nanotubes. Carbon, 113, 231-236. https://doi.org/10.1016/j.carbon.2016.11.057

Vancouver

Author

He, Maoshuai ; Magnin, Yann ; Amara, Hakim ; Jiang, Hua ; Cui, Hongzhi ; Fossard, Frédéric ; Castan, Alice ; Kauppinen, Esko ; Loiseau, Annick ; Bichara, Christophe. / Linking growth mode to lengths of single-walled carbon nanotubes. In: Carbon. 2017 ; Vol. 113. pp. 231-236.

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@article{559322bd9431493e95f9ae3bacfd053a,
title = "Linking growth mode to lengths of single-walled carbon nanotubes",
abstract = "Elucidating the key factors that determine the lengths of single-walled carbon nanotubes (SWCNTs) is of great importance for understanding the origin of chiral selectivity. We use transmission electron microscopy to thoroughly investigate as-grown SWCNTs. The lengths and growth modes of SWCNTs were decided by bright-field imaging. Their respective chiral angles were calculated on the basis of nanobeam diffraction patterns. Systematic investigations reveal that there is no correlation between the SWCNT length and its chiral angle. Instead, it shows that SWCNT lengths depend more on their growth mode, i.e. the link between SWCNT and its seeding catalyst particle. Atomistic computer simulations demonstrate that low carbon fractions in the catalyst lead to so-called tangential growth, with a partial wetting of the metal in the tube, where metal catalyst tends to be deactivated by graphite layer encapsulation and results in short SWCNTs. In contrast, a high carbon concentration inside metal particle favors perpendicular growth modes, where only the tube lip is in contact with the catalyst. Catalysts adopting perpendicular mode could have a longer lifetime, thus catalyze the growth of long SWCNTs. Finally, the carbon concentration related growth mode was applied to interpret diverse SWCNT growth results.",
keywords = "Chirality selectivity, Growth kinetics, Growth mode, Single-walled carbon nanotube, SWCNT length",
author = "Maoshuai He and Yann Magnin and Hakim Amara and Hua Jiang and Hongzhi Cui and Fr{\'e}d{\'e}ric Fossard and Alice Castan and Esko Kauppinen and Annick Loiseau and Christophe Bichara",
year = "2017",
month = "3",
day = "1",
doi = "10.1016/j.carbon.2016.11.057",
language = "English",
volume = "113",
pages = "231--236",
journal = "Carbon",
issn = "0008-6223",

}

RIS - Download

TY - JOUR

T1 - Linking growth mode to lengths of single-walled carbon nanotubes

AU - He, Maoshuai

AU - Magnin, Yann

AU - Amara, Hakim

AU - Jiang, Hua

AU - Cui, Hongzhi

AU - Fossard, Frédéric

AU - Castan, Alice

AU - Kauppinen, Esko

AU - Loiseau, Annick

AU - Bichara, Christophe

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Elucidating the key factors that determine the lengths of single-walled carbon nanotubes (SWCNTs) is of great importance for understanding the origin of chiral selectivity. We use transmission electron microscopy to thoroughly investigate as-grown SWCNTs. The lengths and growth modes of SWCNTs were decided by bright-field imaging. Their respective chiral angles were calculated on the basis of nanobeam diffraction patterns. Systematic investigations reveal that there is no correlation between the SWCNT length and its chiral angle. Instead, it shows that SWCNT lengths depend more on their growth mode, i.e. the link between SWCNT and its seeding catalyst particle. Atomistic computer simulations demonstrate that low carbon fractions in the catalyst lead to so-called tangential growth, with a partial wetting of the metal in the tube, where metal catalyst tends to be deactivated by graphite layer encapsulation and results in short SWCNTs. In contrast, a high carbon concentration inside metal particle favors perpendicular growth modes, where only the tube lip is in contact with the catalyst. Catalysts adopting perpendicular mode could have a longer lifetime, thus catalyze the growth of long SWCNTs. Finally, the carbon concentration related growth mode was applied to interpret diverse SWCNT growth results.

AB - Elucidating the key factors that determine the lengths of single-walled carbon nanotubes (SWCNTs) is of great importance for understanding the origin of chiral selectivity. We use transmission electron microscopy to thoroughly investigate as-grown SWCNTs. The lengths and growth modes of SWCNTs were decided by bright-field imaging. Their respective chiral angles were calculated on the basis of nanobeam diffraction patterns. Systematic investigations reveal that there is no correlation between the SWCNT length and its chiral angle. Instead, it shows that SWCNT lengths depend more on their growth mode, i.e. the link between SWCNT and its seeding catalyst particle. Atomistic computer simulations demonstrate that low carbon fractions in the catalyst lead to so-called tangential growth, with a partial wetting of the metal in the tube, where metal catalyst tends to be deactivated by graphite layer encapsulation and results in short SWCNTs. In contrast, a high carbon concentration inside metal particle favors perpendicular growth modes, where only the tube lip is in contact with the catalyst. Catalysts adopting perpendicular mode could have a longer lifetime, thus catalyze the growth of long SWCNTs. Finally, the carbon concentration related growth mode was applied to interpret diverse SWCNT growth results.

KW - Chirality selectivity

KW - Growth kinetics

KW - Growth mode

KW - Single-walled carbon nanotube

KW - SWCNT length

UR - http://www.scopus.com/inward/record.url?scp=85006074164&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2016.11.057

DO - 10.1016/j.carbon.2016.11.057

M3 - Article

VL - 113

SP - 231

EP - 236

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -

ID: 9924195