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2007年06月19日
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2005年01月18日
【期刊论文】Microstructure and growth of bamboo-shaped carbon nanotubes
李永丹， X.X. Zhang a， *， Z.Q. Li a， b， G.H. Wen a， K.K. Fung a， Jiuling Chen c， Yongdan Li c
Chemical Physics Letters 333(2001)509-514，-0001，（）：
-1年11月30日
Bamboo-shaped carbon nanotubes fabricated by the catalytic growth method with Ni/metallic oxide catalyst are systematically studied using transmission electron microscopy. It is found that except for the nodes the bamboo-shaped carbon nanotubes can be regarded as stacking of truncated conical graphene sheets. Depending on the size of a catalyst, the Ni particles can be encapsulated inside the tubes or at the growth front of the tubes with a plug-shape. A linear relationship between size of the nanotube and the catalyst particle is found. The results suggest that the nanometer-sized Ni catalyst particles are in the liquid state during nanotube growth. A simple model for the growth of bamboo-shaped nanotubes is proposed.
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