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Large scale synthesis of vertical aligned CNT array on irregular quartz particles

Published online by Cambridge University Press:  01 February 2011

Qiang Zhang,
Jiaqi Huang,
Mengqiang Zhao,
Weizhong Qian,
Yao Wang and
Fei Wei
Qiang Zhang
Affiliation:
zhang-qiang@mails.tsinghua.edu.cn, Tsinghua Unviersity, Department of Chemical Engineering, Chemical Reaction Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, Beijing, 100084, China, People's Republic of, +86-10-62794136, +86-10-62772051
Jiaqi Huang
Affiliation:
hjq03@mails.tsinghua.edu.cn, Department of Chemical Engineering, Tsinghua Unviersity, Beijing, 100084, China, People's Republic of
Mengqiang Zhao
Affiliation:
zhaomq04@yahoo.com.cn, Department of Chemical Engineering, Tsinghua Unviersity, Beijing, 100084, China, People's Republic of
Weizhong Qian
Affiliation:
qianwz@mail.tsinghua.edu.cn, Department of Chemical Engineering, Tsinghua Unviersity, Beijing, 100084, China, People's Republic of
Yao Wang
Affiliation:
wangyao@flotu.org, Department of Chemical Engineering, Tsinghua Unviersity, Beijing, 100084, China, People's Republic of
Fei Wei
Affiliation:
weifei@flotu.org, Department of Chemical Engineering, Tsinghua Unviersity, Beijing, 100084, China, People's Republic of
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Abstract

Vertically aligned carbon nanotube (VACNT) arrays grown on quartz particles were produced in large amount via a floating catalysis process. Initially fast synchronous growth of VACNT arrays was observed, which is independently of the irregular shape and rough surface of the quartz particles. However, long VACNT arrays cracked and scattered anisotropically, depending on the irregular particles. The VACNTs have inner diameter of about 8.0 nm and relatively wide outer diameter distribution with a mean value of 36 nm. The outer diameter of CNTs, however, can be further decreased to 19 nm by tuning carbon source and concentration of catalyst precursor. The VACNTs have a high purity up to 97%. This work presents a simple way for controllable continuous production of VACNT array in large scale.

Keywords

nanostructurechemical vapor deposition (CVD) (chemical reaction)powder processing

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References

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