Mass production of multiwalled carbon nanotubes by hydrogen arc discharge

被引：49
|
作者：
Ando, Y [1 ]
Zhao, XL
Inoue, S
Iijima, S
机构：
[1] Meijo Univ, Dept Mat Sci & Engn, Tenpaku Ku, Nagoya, Aichi 4688502, Japan
[2] Meijo Univ, Dept Mat Sci & Engn, JST, Tenpaku Ku, Nagoya, Aichi 4688502, Japan
来源：
JOURNAL OF CRYSTAL GROWTH | 2002年 / 237卷
关键词：
characterization; crystal morphology; nanostructures; physical vapor deposition processes; fullerenes; nanomaterials;
D O I：
10.1016/S0022-0248(01)02248-5
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Highly graphitized multi-walled carbon nanotubes (MWNTs) were mass-produced by hydrogen arc discharge with automatic feeding of carbon electrode. Refluxing them first in hydrogen peroxide and then in a mixture of sulfuric and nitric acids was carried out for purification of MWNTs. The purification process of MWNTs was evaluated by scanning electron microscopy. Nanostructure and crystalline perfection of the purified MWNTs were investigated by using high-resolution transmission electron microscopy and Raman spectroscopy. It was found that the purified MWNTs had about 1.3 nm innermost diameter, resulting in the appearance of radial breathing modes in their Raman spectra. (C) 2002 Elsevier Scicnce B.V. All rights reserved.
引用
收藏
页码：1926 / 1930
页数：5
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