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Fabrication and Growth Mechanism of Bamboo-structured Boron Nitride Nanotubes with Thorn-Like Morphology
Jiang Zhang*, Xi Chen
Department of Physics, South China University of Technology, Guangzhou 510641, China
Abstract:
Bamboo-structured boron nitride (BN) nanotubes with thorn-like morphology were synthe-sized by thermal chemical reaction using amorphous boron powders and NiO nanoparticles as precursors under the flow of NH3 at 1100 oC. The structural and morphological charac-teristics of BN nanotubes were investigated by X-ray diraction and transmission electron microscopy. The results showed that the thorn-like nanostructures attaching to the stems of bamboo-structured BN nanotubes were the hexagonal BN nano akes. Based on the diffu-sion of solid B and vapor B2O2, a possible growth mechanism of these novel thorn-like BN nanotubes was primarily proposed.
Key words:  BN nanotube, Thermal chemical synthesis, X-ray diffraction, Electron mi-croscopy
FundProject:
毛刺状竹节结构氮化硼纳米管的合成与生长机理
张弜*, 陈熹
华南理工大学物理系,广州 510640
摘要:
以非晶硼和氧化镍纳米颗粒为原料,在氨气中1100 oC下合成了毛刺状竹节结构的氮化硼纳米管. 利用X射线衍射和透射电镜研究了氮化硼纳米管的结构和形貌. 竹节结构纳米管表面的毛刺是六方氮化硼的纳米薄片. 提出了一种基于固态硼和气态二氧化硼扩散的毛刺形貌生长机理.
关键词:  氮化硼纳米管,热化学合成,X射线衍射,透射电镜
DOI:10.1063/1674-0068/27/05/555-558
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