Process Intensifi cation by CO_(2)for High Quality Carbon Nanotube Forest Growth:Double-Walled Carbon Nanotube Convexity or Single-Walled Carbon Nanotube Bowls?

Jiaqi Huang; Qiang Zhang; Mengqiang Zhao; Fei Wei

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Process Intensifi cation by CO_(2)for High Quality Carbon Nanotube Forest Growth:Double-Walled Carbon Nanotube Convexity or Single-Walled Carbon Nanotube Bowls?

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Introduction of CO_(2)is a facile way to tune the growth of vertically aligned double-or single-walled carbon nanotube(CNT)forests on wafers.In the absence of CO_(2),a double-walled CNT convexity was obtained.With increasing concentration of CO_(2),the morphologies of the forests transformed first into radial blocks,and finally into bowl-shaped forests.Furthermore,the wall number and diameter distribution of the CNTs were also modulated by varying the amount of CO_(2).With increasing CO_(2)concentration,CNTs with fewer wall number and smaller diameter were obtained.The addition of CO_(2)is speculated to generate water and serve as a weak oxidant for high quality CNT growth.It can tune the growth rate and the morphologies of the forests,prevent the formation of amorphous carbon,and reduce the wall number of the CNTs.

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《纳米研究：英文版》 |2009年第11期|P.872-881|共10页
作者
Jiaqi Huang; Qiang Zhang; Mengqiang Zhao; Fei Wei;
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作者单位

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China;

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China;

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China;

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China;

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原文格式 PDF
正文语种 chi
中图分类工程材料学;
关键词
Carbon nanotube forest; carbon dioxide; chemical vapor deposition; self organization; process intensification;

Process Intensifi cation by CO_(2)for High Quality Carbon Nanotube Forest Growth:Double-Walled Carbon Nanotube Convexity or Single-Walled Carbon Nanotube Bowls?

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