Change of tube diameter distribution of single-wall carbon nanotubes induced by changing the bimetallic ratio of Ni and Y catalysts

被引:63
作者
Takizawa, M
Bandow, S
Yudasaka, M
Ando, Y
Shimoyama, H
Iijima, S
机构
[1] Meijo Univ, Dept Mat Sci & Engn, Japan Sci & Technol Corp, Tenpaku Ku, Nagoya, Aichi 4688502, Japan
[2] NEC Corp Ltd, Japan Sci & Technol Corp, Tsukuba, Ibaraki 3058501, Japan
关键词
D O I
10.1016/S0009-2614(00)00817-4
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
The effect of Ni and Y concentrations in bimetallic Ni-Y catalyst on single-wall carbon nanotube (SWNT) generation is studied. When we added small amount of Y with the order of 0.1 atomic % (at%) against C, the generation rate of soot in are discharge was enhanced by a factor of 2-3 as compared with that of only C. Addition of Ni well enhanced the generation of SWNTs. The tube diameter distribution was controlled by changing Y concentration (0-9.0 at%), but was not sensitive to Ni concentration (0.2-3.0 at%). The mean tube diameter was increased with increasing Y concentration. (C) 2000 Published by Elsevier Science B.V.
引用
收藏
页码:351 / 357
页数:7
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