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Title: Chemical synthesis and characterization of boron/boron nitride core-shell nanostructures
Authors: Huo, K.F.
Hu, Z.
Fu, J.J.
Xu, H.
Wang, X.Z.
Chen, Y.
Lü, Y.N.
Liu, B.H. 
Ding, J. 
Issue Date: Jul-2003
Citation: Huo, K.F.,Hu, Z.,Fu, J.J.,Xu, H.,Wang, X.Z.,Chen, Y.,Lü, Y.N.,Liu, B.H.,Ding, J. (2003-07). Chemical synthesis and characterization of boron/boron nitride core-shell nanostructures. Journal of Materials Research 18 (7) : 1641-1645. ScholarBank@NUS Repository.
Abstract: A moderate chemical method [i.e., the reaction of diborane (B2H6) and a mixture gas of ammonia and nitrogen (NH3/N2) over nanoscale iron boride at 1100°C] was developed to explore the boron nitride (BN) nanostructures. The products were well characterized by high-resolution electron microscopy and energy-dispersive x-ray spectroscopy. Two types of novel core-shell nanocapsules of amorphous boron core encapsulated in crystalline boron nitride shell were obtained. The first one looked like a peanut with an amorphous B core containing a trace of BN crystallites, a transition layer of BN nanofibers and amorphous B, and a thornlike shell of BN nanofibers. The second one looked like a perfect sphere consisting of a pure amorphous B core and a rather smooth crystalline BN shell. These results not only provided us a new chemical method for preparing BN nanostructures but also enriched the important BN nanostructures family. A growth mechanism is also briefly discussed.
Source Title: Journal of Materials Research
ISSN: 08842914
Appears in Collections:Staff Publications

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