Authors: S. Choi, J.S. Nam, S.S. Choi, C.M. Lee, J.I. Kim and S.H. Hong
Affilation: Seoul Nationl University, Korea
Pages: 221 - 224
Keywords: carbon nanotubes, arc-jet plasma, decomposition of hydrocarbon, synthesis
We present a method to produce carbon nanotubes by decomposition of hydrocarbons using an arc-jet plasma of high temperature (500020000 K). Carbon nanotubes are continuously produced in a floating condition by introducing a hydrocarbon gas and a metal precursor into the arc-jet plasma. In this experimental work, argon and hydrogen are used as a plasma gas, nickel powder as a metal precursor, and methane as a carbon source. For the investigation of morphology, crystallization degree and purity of the carbon nanotubes in the soot produced under various processing conditions, we have performed the material analyses by using SEM, Raman spectroscopy and TGA. Since the suggested arc-jet plasma process is continuous and easily scalable, it is expected to be a promising technique for a large-scale commercial production of carbon nanotubes.