Skip to main content Accessibility help

Effects of MeV Ions on Thermal Stability of Single Walled Carbon Nanotubes

  • Ananta Raj Adhikari (a1), Mengbing Huang (a2), Chang Ryu (a3), Pullickel Ajayan (a4) and Hassaram Bakhru (a5)...


The properties of carbon nanotubes (CNTs) are closely dependent on their structures, and therefore may be tailored by controllably introducing defects in the nanotube systems. In this work, we have investigated the effects of energetic ions (H+ and He+) on the thermal stability of single wall nanotubes (SWNTs) against oxidation in air. SWNTs were irradiated with MeV ions to various doses in the range 1013-1016 cm−2. Thermogravimetric analysis (TGA) was used to determine the loss of CNT masses as a result of oxidation processes. As opposed to the case of pristine SWNTs for which the temperature (Tmax) corresponding to maximum oxidation rate was found to be ∼ 495 °C, ion beam processing significantly enhanced the thermal stability of nanotubes, e.g., Tmax increased by about 30 °C after H+ implantation (dosage: 1015 cm−2) and 17 °C after He+ implantation (dosage: 1013 cm−2). The activation energies for thermal oxidation under various conditions were also extracted from TGA data, with values ranging from 1.13 eV (for pristine SWNTs) to 1.37 eV, depending on ion doses and species. Raman spectroscopy was used to determine the characteristics of the G band (C-C stretching mode) and D band (disorder induced mode) in CNTs. The work suggests that the SWNTs modifies to more stable structure (may be cross-linked SWNTs) at small doses. Once the number of defects exceeds some critical value (depending on the type and dosage of bombarding ion) the bonding energy in CNTs weakens, leading to the reduced thermal stability of CNTs against oxidation.



Hide All
1 Iijima, S., Ichihashi, T., Nature 363, 603 (1993).
2 Collins, P. G., Zettl, A., Bando, H., Thess, A. and Smalley, R. E., Science 278, 100 (1997).
3 Wong, E. W., Sheehan, P. E. and Liber, C. M., Science 277, 1971 (1997).
4 Chen, P., Wu, X., Lin, J. and Tan, K., Science 285, 91 (1999).
5 Dresselhaus, M. S., Dresselhaus, G., Avouris, P., Carbon Nanotubes, Vol. 80 (Springer-Verlag, Heidelgurg, 2001).
6 Lahr, B., Sandler, J., Kunstsoffe 90, 94 (2000).
7 Krashminnikov, A. V. and Nordlund, K., J. Vac. Sci. Technol. B 20, 728 (2002).
8 Kotakoski, J., Krasheninnikov, A. V., Ma, Y., Foster, A. S., Phys. Rev. B 71, 205408 (2005).
9 Bockrath, M., Liang, W., Bozovic, D., Hafner, J. H., Liber, C. M., Tinkham, M. and Park, H., Science 291, 283 (2001).
10 Broido, A., J. Polym. Sci. 7, 1762 (1969).
11 Chu, X. and Schmidt, L. D., Carbon 29, 1251 (1991).
12 Mckee, D. W. and Spiro, C. L., Carbon 23, 437 (1985).
13 Dresselhaus, M S, Dresselhaus, G, Eklund, P C 1996 Science of Fullerenes and Carbon Nanotubes, Academic Press, San Diego
14 Tuinstra, F. and Koening, J. L., J. Chem. Phys. 53, 1126 (1970).
15 Salonen, E., Krasheninnikov, A.V. and Nordlund, K., Nucl. Instr. and Meth. B 193, 603 (2002).
16 Lopez, M. J., Rubio, A., Alonso, J. A., Lefrant, S., Metenier, K. and Bonnamy, S., Phys. Rev. Lett. 89, 255501 (2002).
17 Bom, D., Andrews, R., Jacques, D., Anthony, J., Chen, B., Meier, M. S. and Seleque, J. P., Nano Lett. 6, 615 (2002).
18 El-Barbary, A. A., Telling, R. H., Ewels, C. P., Heggie, M. I. and Briddon, P. R., Phys. Rev. B 68, 144107 (2003).


Effects of MeV Ions on Thermal Stability of Single Walled Carbon Nanotubes

  • Ananta Raj Adhikari (a1), Mengbing Huang (a2), Chang Ryu (a3), Pullickel Ajayan (a4) and Hassaram Bakhru (a5)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed