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	Thermal Analysis Study of the Growth Kinetics of Carbon Nanotubes and Epitaxial Graphene Layers on Them
	Feng, Xiaofeng ; Liu, Kai ; Xie, Xu ; Zhou, Ruifeng ; Zhang, Lina ; Li, Qunqing ; Fan, Shoushan ; Jiang, Kaili
	2010-10-12 ; 2010-10-12
关键词	CHEMICAL-VAPOR-DEPOSITION TEMPERATURE-DEPENDENT GROWTH FLUIDIZED-BED REACTOR IN-SITU MEASUREMENTS CATALYST DEACTIVATION CVD SYNTHESIS ARRAYS MECHANISM WALL BENZENE Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary
中文摘要	With the aim of improving the yield and purity of carbon nanotubes (CNTs), we have studied the chemical vapor deposition (CVD) growth of CNTs with Fe-Mo powder catalyst and acetylene precursor by using the technique of in situ simultaneous thermal analysis (STA). We could distinguish this way the rapid catalytic growth stage of CNTs and the slow epitaxial growth stage of graphitic impurities on the nanotubes, which were discovered to be graphene layers. Both reactions were first order, and the activation energies were determined to be 177 and 189 kJ/mol, respectively. In the rapid-growth stage, the growth of CNTs could be further tuned from kinetically controlled regime to gas-diffusion-controlled regime, where the CNTs exhibit a longer growth time and a higher yield, using appropriately shaped crucibles. These results are helpful for both elucidating the growth mechanism of CNTs and improving the quality of mass-produced CNTs.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81539]
专题	清华大学
推荐引用方式 GB/T 7714	Feng, Xiaofeng,Liu, Kai,Xie, Xu,et al. Thermal Analysis Study of the Growth Kinetics of Carbon Nanotubes and Epitaxial Graphene Layers on Them[J],2010, 2010.
APA	Feng, Xiaofeng.,Liu, Kai.,Xie, Xu.,Zhou, Ruifeng.,Zhang, Lina.,...&Jiang, Kaili.(2010).Thermal Analysis Study of the Growth Kinetics of Carbon Nanotubes and Epitaxial Graphene Layers on Them..
MLA	Feng, Xiaofeng,et al."Thermal Analysis Study of the Growth Kinetics of Carbon Nanotubes and Epitaxial Graphene Layers on Them".(2010).

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