Abstract
Nitrogen-doped carbon nanotubes are synthesized by the pyrolysis of CH 3CN with/without H 2 over MgO supported Fe catalysts at 850 °C in argon flow. In both cases nitrogen is introduced to dope the product with quite different amount. TG analysis, Raman spectroscopy, SEM and TEM results showed that the introduction of H 2 is favorable for the formation of multi-walled nanotubes (MWNTs) containing less nitrogen.
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