Abstract
In this paper, carbon nanotubes (CNTs) were synthesized by catalytic pyrolysis of CO and CH4 using flame pyrolysis method. The effects of using the two different carbon sources to the preparation of CNTs with all other conditions being equal were comparatively studied. The results showed that: the morphology of CNTs synthesized from different carbon source gases had certain difference. Higher yield of carbon nanotubes could be synthesized using CH4 as carbon source than using CO. At the same time, the former had less number of tube walls and the vascular bundles arranged more neatly. Synthetizing CNTs via catalytic decomposition of CH4 had more advantages than using CO by flame pyrolysis method.
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