Diameters of single-wall carbon nanotubes depending on helium gas pressure in an arc discharge

被引：36

作者：

Saito, Y ^{[1
]}

Tani, Y

Kasuya, A

机构：

[1] Mie Univ, Dept Elect & Elect Engn, Tsu, Mie 5148507, Japan

[2] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 11期

关键词：

D O I：

10.1021/jp993868o

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：

Diameter distributions of single-wall carbon nanotubes (;SWNTs) produced by an are discharge with a Rh-Pt catalyst at various helium pressures from 50 to 1520 Torr were studied by transmission electron microscopy and Raman scattering spectroscopy. The distribution shifted systematically to small diameter with the decrease of helium pressure. In addition to the helium pressure, the diameters of SWNTs were dependent on the locations inside the are evaporator where SWNTs were collected (viz., either on the chamber walls or around the cathode). The most frequently occurring diameters could be controlled from 0.95 nm at 50 Torr to 1.4 nm at 1520 Torr. The effect of helium pressure on the diameters of SWNTs is discussed in connection with the corresponding change in the yield of higher fullerenes.

引用

页码：2495 / 2499

页数：5

共 46 条

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