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Investigating the Growth Process of Vertically Aligned Single-Walled Carbon Nanotubes Synthesized from Alcohol

Published online by Cambridge University Press:  01 February 2011

Erik Einarsson ,
Rong Xiang ,
Kazuaki Ogura ,
Jun Okawa ,
Zhengyi Zhang  and
Shigeo Maruyama
Erik Einarsson
Affiliation:
[email protected], The University of Tokyo, Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan, +81-3-5841-6408, +81-3-5841-6408
Rong Xiang
Affiliation:
[email protected], The University of Tokyo, Dept. of Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
Kazuaki Ogura
Affiliation:
[email protected], The University of Tokyo, Dept. of Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
Jun Okawa
Affiliation:
[email protected], The University of Tokyo, Dept. of Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
Zhengyi Zhang
Affiliation:
[email protected], The University of Tokyo, Dept. of Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
Shigeo Maruyama
Affiliation:
[email protected], The University of Tokyo, Dept. of Mechanical Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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Abstract

We have performed a systematic investigation of the influence of the growth parameters on the synthesis of vertically aligned single-walled carbon nanotubes (VA-SWNTs) by the alcohol catalytic chemical vapor deposition (ACCVD) method. The growth process of the VA-SWNTs was monitored using an in situ optical absorbance technique and the effects of CVD temperature and ethanol pressure on the initial growth rate and the catalyst lifetime were investigated. We found that for a given CVD temperature, there is an optimum pressure at which the VA-SWNT film height is maximized, and this pressure increases with temperature. Below this optimum pressure the growth reaction is first-order, with the arrival of ethanol to the catalyst being the rate-limiting step. The activation energy of the growth was also determined to be approximately 1.5 eV.

The root-growth mechanism of VA-SWNTs by the alcohol CVD method was also confirmed by a two-stage growth process. Following a short growth period using normal ethanol, isotope labeled 13C ethanol was introduced to continue the growth. The location of the 13C was confirmed by resonance Raman spectroscopy, confirming the root-growth mechanism.

Keywords

chemical vapor deposition (CVD) (chemical reaction)nanostructureRaman spectroscopy
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1057: Symposium II – Nanotubes and Related Nanostructures , 2007 , 1057-II14-04
Copyright
Copyright © Materials Research Society 2008

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References

REFERENCES

1. Mingo, N. and Broido, D., Phys. Rev. Lett. 95, 096105 (2005).Google Scholar
2. Islam, M.F., Milkie, D.E., Kane, C.L., Yodh, A.G., and Kikkawa, J.M., Phys. Rev. Lett. 93, 037404 (2004).Google Scholar
3. Murakami, Y., Einarsson, E., Edamura, T., and Maruyama, S., Phys. Rev. Lett. 94, 087402 (2005).Google Scholar
4. Maruyama, S., Physica B 323, 193 (2002).Google Scholar
5. Yu, C., Shi, L., Yao, Z., Li, D., and Majumdar, A., Nano Lett. 5, 1842 (2005).Google Scholar
6. Pop, E., Mann, D., Wang, Q., Goodson, K., and Dai, H., Nano Lett. 6, 96 (2006).Google Scholar
7. Murakami, Y., Chiashi, S., Miyauchi, Y., Hu, M., Ogura, M., Okubo, T., and Maruyama, S., Chem. Phys. Lett. 385, 298 (2004).Google Scholar
8. Hata, K., Futaba, D.N., Mizuno, K., Namai, T., Yumura, M., and Iijima, S., Science 306, 1362 (2004).Google Scholar
9. Zhong, G., Iwasaki, T., Honda, K., Furukawa, Y., Ohdomari, I., and Kawarada, H., Chem. Vap. Dep. 11, 127 (2005).Google Scholar
10. Xu, Y.-Q., Flor, E., Kim, M.J., Behrang, H., Schmidt, H., Smalley, R.E., and Hauge, R.H., J. Am. Chem. Soc. 128, 6560 (2006).Google Scholar
11. Zhang, L., Tan, Y., and Resasco, D.E., Chem. Phys. Lett. 422, 198 (2006).Google Scholar
12. Noda, S., Sugime, H., Osawa, T., Yoshiko, T., Chiashi, S., Murakami, Y., and Maruyama, S., Carbon 44, 1414 (2006).Google Scholar
13. Maruyama, S., Kojima, R., Miyauchi, Y., Chiashi, S., and Kohno, M., Chem. Phys. Lett. 360, 229 (2002).Google Scholar
14. Maruyama, S., Einarsson, E., Murakami, Y., and Edamura, T., Chem. Phys. Lett. 403, 320 (2005).Google Scholar
15. Xiang, R., Zhang, Z., Ogura, K., Okawa, J., Einarsson, E., Miyauchi, Y., Shiomi, J., and Maruyama, S., submitted to Jpn. J. Appl. Phys.Google Scholar
16. Einarsson, E., Murakami, Y., Kadowaki, M., and Maruyama, S., submitted to Carbon.Google Scholar
17. Louchev, O.A., Laude, T., Sato, Y., and Kanda, H., J. Chem. Phys. 118, 7622 (2003).Google Scholar