碳纳米管
材料科学
碳纳米管负载催化剂
二茂铁
拉曼光谱
化学气相沉积
因科镍合金
铜
化学工程
扫描电子显微镜
透射电子显微镜
纳米技术
碳纳米管的光学性质
碳纤维
纳米管
碳纳米纤维
复合材料
冶金
化学
工程类
电极
物理化学
物理
光学
复合数
电化学
合金
作者
Gowtam Atthipalli,Rigved Epur,Prashant N. Kumta,Jennifer L. Gray
出处
期刊:Journal of vacuum science and technology
[American Vacuum Society]
日期:2011-05-25
卷期号:29 (4)
被引量:9
摘要
Aligned growth of carbon nanotubes on copper substrates has been achieved using a nickel-based catalyst, Inconel, which is first deposited on the copper foil substrate before the growth of nanotubes via thermal chemical vapor deposition (CVD). An additional catalyst, iron, is supplied by mixing ferrocene with the carbon feedstock, xylene, during the CVD growth. For specific ranges of the film thickness, 10–12 nm, and under certain growth conditions, dense, aligned growth of carbon nanotubes is observed. This technique represents a relatively simple process for direct growth of carbon nanotubes on copper substrates without the need for additional barrier layers and plasma-enhanced CVD techniques. Scanning electron microscopy was used to qualitatively evaluate the density of the nanotubes and the tendency to align in a direction perpendicular to the substrates. Transmission electron microscopy and Raman spectroscopy were used to examine the structure and quality of the nanotubes, as well as the composition of the catalyst particles.
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