A Novel Synthesis Method for Aligned Carbon Nanotubes in Organic Liquids
A Novel Synthesis Method for Aligned Carbon Nanotubes in Organic Liquids
复制标题
有机液体中定向碳纳米管的新合成方法
DOI：
10.1143/jjap.41.l408
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发表时间：
2002
影响因子：
1.5
通讯作者：
T. Ando
中科院分区：
文献类型：
--
作者：
Yafei Zhang;M. Nishitani;C. Xiao;T. Ando
采用热衬底法在硅衬底上生长了定向碳纳米管阵列。样品生长在一个玻璃腔室配备了一个功能，其中甲醇和乙醇蒸汽冷凝通过水冷却。将具有薄Fe膜的Si衬底在液体甲醇中电加热至930°C。在Si衬底上得到了中空的多壁碳纳米管，其外径为13 ~ 26 nm，长度为20 µm，管半径与管壳厚度之比为1.7 ~ 2.1。纳米管的顶端用几乎无缝的帽封闭。碳纳米管的生长机理是在热非平衡条件下的基片表面的催化过程。
Aligned carbon nanotube arrays have been grown on Si substrates in methanol by using a hot-substrate method. Samples were grown in a glass chamber equipped with a function in which methanol and ethanol vapors were condensed by means of water-cooling. Si substrates with a thin Fe film were electrically heated to 930°C in liquid methanol. Hollow mutiwalled carbon nanotubes standing well on the Si substrates were obtained with external diameters ranging from 13 to 26 nm and lengths up to 20 µm, with the ratio of tube radius to the thickness of tube shells ranging from 1.7 to 2.1. The top ends of the nanotubes were closed with nearly seamless caps. The mechanism of nanotube growth is a catalytic process at the substrate surface under thermal non-equilibrium.