This work was supported by Tianjin Key Foundation of Basic Research Plan (05YFJZJC00200) and SRF for ROCS (2004-176), SEM, China.
High Yield Preparation of Carbon Nanotube Arrays of Good Quality by CVD†
Article first published online: 19 JUL 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemical Vapor Deposition
Volume 18, Issue 7-9, pages 201–208, September 2012
How to Cite
Shi, S., Wang, H., Wang, X., Xue, T., Hou, W., Cui, L., Lin, K., Jin, F., Cheng, G., Chen, X., Yao, P. and Cui, S. (2012), High Yield Preparation of Carbon Nanotube Arrays of Good Quality by CVD. Chem. Vap. Deposition, 18: 201–208. doi: 10.1002/cvde.201106975
- Issue published online: 5 SEP 2012
- Article first published online: 19 JUL 2012
- Manuscript Revised: 23 APR 2012
- Manuscript Received: 27 DEC 2011
- Effect of temperature;
- High yield;
Multi-walled carbon nanotube arrays (CNTAs) of good quality are prepared in a high yield of ∼7 wt.% by CVD at 850 °C, using rectified cyclohexane as the carbon source. All the CNTAs forming on the inner wall of a quartz tube reactor are of good quality, but those forming in the zone 40–60 cm away from the entrance of the furnace show the best degrees of graphitization and alignment. The length of these CNTAs is ∼200 µm, their average growth rate during the CVD reaction (8 min) is 25 µm min−1, and the content of MWCNTs and iron are 93.7 wt.% and 3.9 wt.%, respectively. The effect of CVD reaction temperature on the yield and quality of the CNTAs is also investigated and explained by knowledge of the chemical kinetics of reaction; four main chemical reactions are suggested for the growth of CNTAs during the process of CVD reaction, and the ratios of the active carbon species (A) to the active Fe catalyst species (C) (A:C) and the other carbon species (B) (A:B). The reasons for the high yield of CNTAs of good quality are discussed briefly.