Diameter enlargement of single-wall carbon nanotubes by oxidation

被引：51

作者：

Zhang, M

Yudasaka, M

Iijima, S

机构：

[1] Japan Sci & Technol Corp, SORST, Solut Oriented Res Sci & Technol, NEC Fundamental Res Labs, Tsukuba, Ibaraki 3058501, Japan

[2] Meijo Univ, Tempaku Ku, Nagoya, Aichi 4688502, Japan

[3] NEC Corp Ltd, Tsukuba, Ibaraki 3058501, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 01期

关键词：

D O I：

10.1021/jp035850q

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 diameter of high-pressure CO (HiPco) single-wall carbon nanotubes (SWNTs) has been enlarged by treating them with nitric acid and oxygen, and the diameter enlargement is related to the nitric acid refluxing time. Raman spectra (exciting wavelength 488 nm) and transmission electron microscopy showed that the 0.8-1.2 nm diameter distribution of HiPco SWNTs could be narrowed to one centered around 1.2 nm when the nitric acid treatment time was I h. Significantly, SWNTs of 1.37-2.4 nm in diameter were discovered when the nitric acid treatment lasted more than 2 h.

引用

页码：149 / 153

页数：5

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