Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment

Y. A. Kim; H. Muramatsu; T. Hayashi; M. Endo; M. Terrones; M. S. Dresselhaus

doi:10.1016/j.cplett.2004.09.024

Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment

Y. A. Kim, H. Muramatsu, T. Hayashi, M. Endo, M. Terrones, M. S. Dresselhaus

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Abstract

We describe, for the first time, the sequential structural changes of bundles of double-walled carbon nanotubes (DWNTs) as a function of heat treatment temperature. DWNTs (inner diameters >0.9 nm) are structurally stable up to 2000 °C. Above 2100 °C, the outer walls of adjacent DWNTs start coalescing into large diameter tubes. At temperatures higher than 2100 °C, three different types of structures were observed: (a) large-diameter DWNTs; (b) multi-walled carbon nanotubes (MWNTs), and (c) flaky carbons. The results demonstrate that DWNTs are much more stable than SWNTs, and their stability is comparable to that of MWNTs.

Original language	English (US)
Pages (from-to)	87-92
Number of pages	6
Journal	Chemical Physics Letters
Volume	398
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2004.09.024
State	Published - Nov 1 2004

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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title = "Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment",

abstract = "We describe, for the first time, the sequential structural changes of bundles of double-walled carbon nanotubes (DWNTs) as a function of heat treatment temperature. DWNTs (inner diameters >0.9 nm) are structurally stable up to 2000 °C. Above 2100 °C, the outer walls of adjacent DWNTs start coalescing into large diameter tubes. At temperatures higher than 2100 °C, three different types of structures were observed: (a) large-diameter DWNTs; (b) multi-walled carbon nanotubes (MWNTs), and (c) flaky carbons. The results demonstrate that DWNTs are much more stable than SWNTs, and their stability is comparable to that of MWNTs.",

author = "Kim, {Y. A.} and H. Muramatsu and T. Hayashi and M. Endo and M. Terrones and Dresselhaus, {M. S.}",

note = "Funding Information: The C luster program sponsored by the Ministry of Education, Culture, Sports, Science and Technology supported this work. MT is grateful to CONACYT-M{\'e}xico (Grants: W-8001-millennium initiative, 37589-U, the UC-MEXUS PS/CN 02-144) and the CIAM initiative (Grant CO2-41464) for financial support.",

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doi = "10.1016/j.cplett.2004.09.024",

language = "English (US)",

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T1 - Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment

AU - Kim, Y. A.

AU - Muramatsu, H.

AU - Hayashi, T.

AU - Endo, M.

AU - Terrones, M.

AU - Dresselhaus, M. S.

N1 - Funding Information: The C luster program sponsored by the Ministry of Education, Culture, Sports, Science and Technology supported this work. MT is grateful to CONACYT-México (Grants: W-8001-millennium initiative, 37589-U, the UC-MEXUS PS/CN 02-144) and the CIAM initiative (Grant CO2-41464) for financial support.

PY - 2004/11/1

Y1 - 2004/11/1

N2 - We describe, for the first time, the sequential structural changes of bundles of double-walled carbon nanotubes (DWNTs) as a function of heat treatment temperature. DWNTs (inner diameters >0.9 nm) are structurally stable up to 2000 °C. Above 2100 °C, the outer walls of adjacent DWNTs start coalescing into large diameter tubes. At temperatures higher than 2100 °C, three different types of structures were observed: (a) large-diameter DWNTs; (b) multi-walled carbon nanotubes (MWNTs), and (c) flaky carbons. The results demonstrate that DWNTs are much more stable than SWNTs, and their stability is comparable to that of MWNTs.

AB - We describe, for the first time, the sequential structural changes of bundles of double-walled carbon nanotubes (DWNTs) as a function of heat treatment temperature. DWNTs (inner diameters >0.9 nm) are structurally stable up to 2000 °C. Above 2100 °C, the outer walls of adjacent DWNTs start coalescing into large diameter tubes. At temperatures higher than 2100 °C, three different types of structures were observed: (a) large-diameter DWNTs; (b) multi-walled carbon nanotubes (MWNTs), and (c) flaky carbons. The results demonstrate that DWNTs are much more stable than SWNTs, and their stability is comparable to that of MWNTs.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

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ER -

Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment

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