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Citation: CAO Yong, JIAO Qing-Ze, ZHAO Yun. Synthesis of N-doped and Undoped Carbon Nanotubes on Fe/M Catalysts[J]. Acta Physico-Chimica Sinica, ;2009, 25(11): 2380-2384. doi: 10.3866/PKU.WHXB20091121 shu

Synthesis of N-doped and Undoped Carbon Nanotubes on Fe/M Catalysts

1.
School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, P. R. China

Received Date: 6 April 2009
Available Online: 29 September 2009

N-doped and undoped carbon nanotubes (CNx and CNTs) were synthesized by the catalytic chemical vapor deposition of ethylenediamine and hexane on Fe/M catalysts. The Fe catalysts were obtained by calcination ofa Mg/Fe layered double hydroxide (LDH) and a mixture of Mg(NO3)2/Fe(NO3)3 precursors followed by reduction (Fe-LDH and Fe-Mg(NO3)2/Fe(NO3)3). The CNTs grown on both catalysts had tubular structures with hollow cores while some of the CNx grown on Fe-Mg(NO3)2/Fe(NO3)3 had a different morphology from the conventional bamboo-shape of those grown on Fe-LDH. This special morphology with thick walls had some space between the graphite layers. The molar content of N in the CNx grown on Fe-LDH was 6.3%, which was a little more than 5.7%found in the CNx grown on Fe-Mg(NO3)2/Fe(NO3)3. However, the latter has more defects and disorders.
- Carbon nanotube,
- N-doped carbon nanotube,
- Layered double hydroxide,
- Catalyst,
- Precursor,
- Chemical vapor deposition
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