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 | |
| State | Published - Nov 1 2004 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Kim, Y. A., Muramatsu, H., Hayashi, T., Endo, M., Terrones, M., & Dresselhaus, M. S. (2004). Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment. Chemical Physics Letters, 398(1-3), 87-92. https://doi.org/10.1016/j.cplett.2004.09.024