Growth and characterization of boron nitride nanotubes having novel morphologies using mechanothermal process
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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Title |
Growth and characterization of boron nitride nanotubes having novel morphologies using mechanothermal process
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Creator |
Singhal, Sunil Kumar
Srivastava, Avanish Kumar Dilawar , Nita Gupta, Anil Kumar |
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Subject |
Chemistry
Materials Science |
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Description |
We report an effective approach to synthesize boron nitride (BN) nanotubes having novel morphologies employing a mechanothermal process. In this process, a precursor containing B–N–O–Fe was first synthesized by ball milling a 1:1 mixture of elemental boron (B) and hexagonal boron nitride (hBN) and iron oxide (about 6 wt%) for about 36 h in
the presence of ammonia gas. BN nanotubes were grown by annealing this precursor in ammonia gas atmosphere at 1,250–1,350 0C for about 3 h. The nanotubes produced using this technique were found to evolve structures having Y-junctions and bamboolike morphology with an average diameter of about 30–100 nm and length several microns. A few nanotubes with partially folded in diameter were also
found to co-exist along with other nanotubes. These
nanotubes were characterized using various techniques
such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and Raman spectroscopy. The growth mechanism for the formation of these novel morphologies in BN nanotubes is also discussed.
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Publisher |
Springer Verlag
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Date |
2009-10-19
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://npl.csircentral.net/175/1/145.pdf
Singhal, Sunil Kumar and Srivastava, Avanish Kumar and Dilawar , Nita and Gupta, Anil Kumar (2009) Growth and characterization of boron nitride nanotubes having novel morphologies using mechanothermal process. Journal of Nanoparticle Research , 12 (6). pp. 2201-2210. ISSN 1388-0764 |
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Relation |
http://npl.csircentral.net/175/
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