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Preparation of aligned multi-walled BN and B/C/N nanotubular arrays and their characterization using HRTEM, EELS and energy-filtered TEM

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Volume
323
Identifiers
DOI: 10.1016/s0921-4526(02)00967-5
Keywords
  • B–C–N
  • Bn
  • Nanotubes
  • Transmission Electron Microscopy
  • Electron Energy Loss Spectroscopy
Disciplines
  • Chemistry

Abstract

Abstract Aligned multi-walled nanotubes composed of B/C/N and/or B/N atoms were synthesized by reacting chemical-vapor-deposition-grown C nanotubes or pyrolitically grown CN x nanotubes, boron oxide and nitrogen at 1773–2200 K. We note that by increasing the reacting temperature, the overall B–N content within the tubular assemblies is also enhanced. The nanostructures were studied using high-resolution transmission electron microscopy, spatially resolved energy-filtered TEM (Omega filter) and electron energy loss spectroscopy. An oxidation-driven mechanism of B–N enrichment within the C-based tubular templates has been proposed and verified by the experimental observations.

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