Hostname: page-component-8448b6f56d-xtgtn Total loading time: 0 Render date: 2024-04-24T16:58:44.436Z Has data issue: false hasContentIssue false
  • English
  • Français

Single-Wall Carbon Nanotubes Synthesis by Means of UV Laser Vaporization: Effects of the Furnace Temperature and the Laser Intensity Processing Parameters

Published online by Cambridge University Press:  15 March 2011

N. Braidy ,
M.A. El Khakani  and
G.A. Botton
N. Braidy
Affiliation:
Institut National de la Recherche Scientifique, INRS-Énergie et Matériaux, 1650 Lionel-Boulet, Varennes, PQ, J3X 1S2, Canada
M.A. El Khakani
Affiliation:
Institut National de la Recherche Scientifique, INRS-Énergie et Matériaux, 1650 Lionel-Boulet, Varennes, PQ, J3X 1S2, Canada
G.A. Botton
Affiliation:
Materials Technology Laboratory, CANMET, 568 Booth Street, Ottawa, ON, K1A 0G1, Canada
Get access

Abstract

Carbon single-wall nanotubes (SWNTs) have been successfully synthesized by means of KrF laser vaporization of a Co-Ni-doped graphite pellet in a flowing argon atmosphere. The effects of two key processing parameters, namely the furnace temperature (in the 25-1150 °C range) and the laser intensity (in the 0.8-4.4 x 108 W/cm2 range), on the yield and the structural characteristics of the carbon SWNTs were investigated. By characterizing the obtained deposits by means of transmission electron microscopy and micro-Raman spectroscopy techniques, we were able to identify a threshold temperature as low as ∼550 °C, below which no carbon SWNTs can be grown. The increase of the furnace temperature from 550 to 1150 °C was found to lead not only to a significant increase in the SWNTs yield but also to the formation of larger SWNTs bundles. Raman analysis have also revealed that the diameter distribution peak shifts from ∼1.05 to ∼1.22 nm as the temperature is raised from 550 to 1150 °C. At the highest furnace temperature of 1150 °C, we also found that a minimum laser intensity of about 1.6 x 108 W/cm2 is required to grow carbon SWNTs by means of the KrF laser. Higher laser intensities have resulted in a higher yield of SWNTs with relatively thicker bundles. Moreover, the increase of the laser intensity was found to promote the growth of 1.22 nm-diameter nanotubes to the detriment of thinner carbon nanotubes (1.05 and 1.13 nm-diameters).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 703: Symposia U/V – Nanophase and Nanocomposite Materials IV , 2001 , V9.31
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Guo, T., Nikolaev, P., Thess, A., Colbert, D.T., and Smalley, R.E., Chem. Phys. Lett. 243, (1995) 49.Google Scholar
2. Thess, A., Lee, R., Nikolaev, P., Dai, H., Petit, P., Robert, J., Xu, C., Lee, Y.H., Kim, S.G., Rinzler, A.G., Colbert, D.T., Scuseria, G.E., Tománek, D., Fischer, J.E., and Smalley, R.E., Science 273, 483 (1996).Google Scholar
3. Bandow, S., Asaka, S., Saito, Y., Rao, A.M., Grigorian, L., Richter, E., and Eklund, P.C., Phys. Rev. Lett. 80, 3779 (1998).Google Scholar
4. Kokai, F., Takahashi, K., Yudasaka, M., Yamada, R., Ichihashi, T., and Iijima, S., J. Phys. Chem. B 103, 4346 (1999).Google Scholar
5. Yudasaka, M., Ichihashi, T., and Iijima, S., J. Phys. Chem. B 102, 10201 (1998).Google Scholar
6. Braidy, N., Khakani, M.A. El, and Botton, G.A., submitted to Carbon (2001).Google Scholar
7. Holden, J.M., Zhou, P., Bi, X.X., Eklund, P.C., Bandow, S., Jishi, R.A., Chowdhury, K. Das, Dresselhaus, G., and Dresselhaus, M.S., Chem. Phys. Lett. 220, 186 (1994).Google Scholar
8. Iijima, S., Wakabayashi, T., and Achiba, Y., J. Phys. Chem. 100, 5839 (1996).Google Scholar
9. Yudasaka, M., Komatsu, T., Ichihashi, T., and Iijima, S., Chem. Phys. Lett. 278, 102 (1997).Google Scholar