Abstract
An extended vapour-liquid-solid (VLS) growth method, which is the reaction of a mixture of nitrogen and ammonia gas over nanoscale Fe-B 'catalyst' particles at 1100°C, has been developed. With this method, BN nanotubes of diameter about 20 nm have been prepared and well characterized by high-resolution transmission electron microscopy and energy dispersive x-ray spectroscopy. In contrast to traditional VLS growth, the boron component in the BN nanotubes comes from the Fe-B 'catalyst' itself, rather than from the vapour precursor. A growing mechanism has been discussed accordingly.
Original language | English |
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Pages (from-to) | 727-730 |
Number of pages | 4 |
Journal | Nanotechnology |
Volume | 15 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2004 |