Synthesis and structure of BN-doped multi-walled and single-walled carbon nanotubes

Autor: Odile Stéphan, A. Loiseau, J. L. Cochon, M. Glerup, Christian Colliex, S. Enouz
Rok vydání: 2006
Předmět:
Zdroj: physica status solidi (b). 243:3246-3251
ISSN: 1521-3951
0370-1972
DOI: 10.1002/pssb.200669190
Popis: We report on the direct synthesis of different kinds of BN-C multi-walled and single-walled nanotubes exhibiting a segregation between BN and C domains. Multi-walled BN-C nanotubes (MW-BN/C-NTs) were synthesized using the aerosol method whereas single-walled BN-C nanotubes (SW-BN/C-NTs) have been for the first time produced using a continuous CO 2 -laser vaporization process [S. Enouz et al., to be published]. Degrees of purity, homogeneity and yield have been estimated from a systematic inspection of the samples by scanning electron microscopy. Structure of these tubes and spatial distribution of C, B and N as well as their chemical environments have been inspected at the nanometer scale by combining high resolution transmission microscopy and nano-electron energy loss spectroscopy. These analyses provide clear evidence of new kinds of arrangements of C, B and N within the graphene layer, which are due to the segregation properties of h-BN and graphite. Thus, combining BN and C elements into nanotubular systems can open the way to a broad range of new nanodevices.
Databáze: OpenAIRE
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