碳纳米管
材料科学
化学气相沉积
表征(材料科学)
纳米技术
化学工程
碳纤维
扫描电子显微镜
碳纳米管负载催化剂
催化作用
复合材料
复合数
碳纳米纤维
化学
有机化学
工程类
作者
J.C. Cochrane,Sha Zhu,Chi-Jung Su,S. L. Lehoczky
标识
DOI:10.1017/s1431927600028099
摘要
Since the superior properties of multi-wall carbon nanotubes (MWCNT) could improve numerous devices such as electronics and sensors, many efforts have been made in investigating the growth mechanism of MWCNT to synthesize high quality MWCNT. Chemical vapor deposition (CVD) is widely used for MWCNT synthesis, and scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDS) are useful methods for analyzing the structure, morphology and composition of MWCNT. Temperature and pressure are two important growth parameters for fabricating carbon nanotubes. in MWCNT growth by CVD, the plasma assisted method is normally used for low temperature growth. However, a high temperature environment is required for thermal CVD. A systematic study of temperature and pressure-dependence is very helpful to understanding MWCNT growth. Transition metal particles are commonly used as catalysts in carbon nanotube growth. It is also interesting to know the how temperature and pressure affect the interface of carbon species and catalyst particles.
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