Mass production of high-quality multi-walled carbon nanotube bundles on a Ni/Mo/MgO catalyst

被引:173
作者
Li, Y
Zhang, XB [1 ]
Tao, XY
Xu, JM
Huang, WZ
Luo, JH
Luo, ZQ
Li, T
Liu, F
Bao, Y
Geise, HJ
机构
[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Dept Mat Sci & Engn, Mat Phys & Microstruct Inst, Hangzhou 310027, Peoples R China
[3] Univ Instelling Antwerp, Dept Chem, B-2610 Antwerp, Belgium
基金
中国国家自然科学基金;
关键词
carbon nanotubes; chemical vapor deposition; catalyst;
D O I
10.1016/j.carbon.2004.09.014
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new catalyst (Ni/Mo/MgO) is reported, with which one can synthesize multi-walled carbon nanotube (MWNT) bundles with a yield of more than 45 times the amount of the pristine catalyst, using a methane-hydrogen mixture as precursor. Powder X-ray diffraction, Raman spectroscopy and thermal gravimetric analysis show that the purity of the as-prepared MWNTs is over 97%. The diameter of the carbon nanotubes is 9-20nm, measured by high-resolution electron microscopy on 421 individual MWNTs. The high purity of the as-prepared MWNTs allows us to omit the usual complex purification process required for carbon nanotubes synthesized by chemical vapor deposition. Because of its durable high activity, the Ni/Mo/MgO catalyst in its pristine state is ideal for mass production of high-quality MWNTs. The synergism of nickel and molybdenum is considered the main reason for the high yield of carbon nanotubes. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:295 / 301
页数:7
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