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

Research output: Contribution to journalArticle

170 Scopus citations

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 languageEnglish (US)
Pages (from-to)87-92
Number of pages6
JournalChemical Physics Letters
Volume398
Issue number1-3
DOIs
StatePublished - Nov 1 2004

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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