碳纳米管
化学气相沉积
催化作用
材料科学
动力学
扩散
化学工程
碳氢化合物
碳纤维
图层(电子)
相(物质)
纳米技术
化学
复合材料
有机化学
热力学
工程类
物理
复合数
量子力学
作者
Guofang Zhong,Takayuki Iwasaki,John Robertson,Hiroshi Kawarada
摘要
Half-centimeter-high mats of vertically aligned single-walled carbon nanotubes were grown at 600 degrees C by point-arc microwave plasma chemical vapor deposition. The mats were produced from 0.5 nm of an Fe catalyst layer, thus showing one of the highest catalytic yields of approximately 105 times. The growth process shows a lack of poisoning of the catalyst, in contrast to other reports. The experimental results confirm that the growth rate is ultimately limited by the gas phase diffusion of hydrocarbon radicals.
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