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| - Temperature and Flow Rate of NH3 Effects on Nitrogen Content and Doping Environmentsof Carbon Nanotubes Grown by Injection CVD Method
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| - Large-scale and vertically aligned nitrogen-doped carbon nanotubes were synthesized by pyrolysis of pyridinewith ferrocene as the catalysts under either pure NH3 or a mixture of NH3 and argon atmosphere using injectionchemical vapor deposition method. Nitrogen content ranges from 4.8 at. % to 8.8 at. % and changes as afunction of growth temperature and the flow rate of NH3. NH3 not only increases the nitrogen content ofcarbon nanotubes but also increases the proportion of pyridine-like N doping in the carbon nanotubes. Itsuggests that nitrogen concentration and nitrogen doping environments of carbon nanotubes could be controlledby changing the growth temperature or flow rate of NH3.
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