Synthesis and characterization of long strands of nitrogen-doped single-walled carbon nanotubes

F. Villalpando-Paez, A. Zamudio, A. L. Elias, H. Son, E. B. Barros, S. G. Chou, Y. A. Kim, H. Muramatsu, T. Hayashi, J. Kong, H. Terrones, G. Dresselhaus, M. Endo, M. Terrones, M. S. Dresselhaus

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Abstract

We describe the synthesis of N-doped single-walled carbon nanotubes (N-SWNTs), that agglomerate in bundles and form long strands (<10 cm), via the thermal decomposition of ferrocene/ethanol/benzylamine (FEB) solutions in an Ar atmosphere at 950 °C. The amount of benzylamine in the solution was varied from 0% to 26% by weight. Using Raman spectroscopy, we noted that as the N content is increased in the starting FEB solution, the growth of large diameter tubes is inhibited. We observed that the relative electrical conductivity of the strands increases with increasing nitrogen concentration. Thermogravimetric analysis (TGA) showed novel features for highly doped tubes that are related to chemical reactions on N sites.

Original languageEnglish (US)
Pages (from-to)345-352
Number of pages8
JournalChemical Physics Letters
Volume424
Issue number4-6
DOIs
StatePublished - Jun 24 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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