Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (8): 881-884.DOI: 10.3724/SP.J.1077.2011.00881

• Research Paper • Previous Articles     Next Articles

Metal-catalyst-free Growth and Characterization of Nitrogen-doped Carbon Nanotubes

WANG Can1, ZHAN Liang1, HUANG Zhen-Hong2, QIAO Wen-Ming1, LIANG Xiao-Yi1, YANG Jun-He3, Ling Li-Cheng1   

  1. (1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; 3. School of Material Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
  • Received:2010-10-17 Revised:2010-12-01 Published:2011-08-20 Online:2011-07-14
  • Supported by:

    National Natural Science Foundation of China (50730003, 50672025, 20806024, 51002051); 863 Program (2008AA062302)

Abstract: Nitrogen-doped carbon (CNx) nanotbues were synthesized by detonation-assisted chemical vapor deposition with carbon nanotubes (CNTs) as catalysts and melamine as carbon/nitrogen sources. CNTs exhibit high catalytic activity for the metal-catalyst-free synthesis of CNx nanotubes. TEM, EDS, Mapping, XPS, Raman and TG were performed to characterize the synthesized CNx nanotubes. CNx nanotubes exhibit compartmentalized bamboo-like structure, and contain high concentration of nitrogen (ca. 17at%), which is homogeneously distributed within compartment layers and tube walls. The pyridine-like and graphitic N are incorporated into the graphitic network. The nitrogen doping induces the decrease of the graphitization degree and results in lower oxidation-resistance temperature. The synthesis of CNx nanotubes without metal catalysts will facilitate the applications of CNx nanotubes.

Key words: carbon nanotubes, metal-catalyst-free, nitrogen-doped

CLC Number: