Log Number: P115
Abstract Submitted to the    NANOTUBE'04 Conference:

Synthesis and characterization of high-quality double-walled carbon nanotubes using catalytic chemical vapor deposition method

S. H. Lee1, S. I. Jung1, C. B. Kong1, T. J. Lee1, S. K. Choi1, M. H. Park2, C. W. Yang2, C. Y. Park3,4, C. J. Lee1

1 Department of Nanotechnology, Hanyang University, Seoul 133-791, Korea.
2 Department of Advanced Materials Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
3 Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
4 Center for Nanotubes and Nanostructured Composites, Sungkyunkwan University, Suwon 440-746, Korea

Contact e-mail: cjlee@hanyang.ac.kr

High-quality double-walled carbon nanotubes (DWNTs) have been produced by catalytic chemical vapor deposition of carbon containing molecules such as propanol, THF, hexane, benzene, alcohol over Fe-Mo embedded MgO or Al2O3 support material. The produced carbon materials indicate high-purity DWNT bundles free of amorphous carbon covering on the surface. Our results show that the amount of DWNTs is over 90 % of tatal carbon product. The diameters of DWNTd were dependent on process conditions and carbon sources. DWNTs have the inner tube diameters in the range of 0.6 – 3.4 nm and the outer tube diameter in the range of 1.4 – 4.5 nm. The interlayer spacing between graphene layers ranges from 0.35 - 0.38 nm. Transmission electron microscopy and Raman analysis show that produced carbon materials have low defect level in the atomic carbon structure, indicating the synthesis of high-quality DWNTs. We will discuss field emission properties from DWNTs in detail.

This document at the URL http://materials.ipicyt.edu.mx/~nt04-abstracts/P115.html
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