A simple purification for single-walled carbon nanotubes

被引：54
|
作者：
Li, JY [1 ]
Zhang, JF [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Res Inst Micro Nanometer Sci & Technol, Minist Educ, Key Lab Thin Film & Microfabricat, Shanghai 200030, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2005年 / 28卷 / 03期
基金：
中国国家自然科学基金;
关键词：
single-walled carbon nanotubes; multi-wall graphite; oxidation; ultrasonication;
D O I：
10.1016/j.physe.2005.03.022
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A simple, effective and non-destructive purification process for single-walled carbon nanotubes synthesized by arc discharge has been demonstrated in this paper. The by-products, amorphous carbon, multi-walled graphite and metallic catalyst, were eliminated successfully by a combination of ultrasonication in the presence of surfactant and gas oxidation. The oxidation in oxygen is advantageous against wet chemical methods because it is easily controllable. Thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and Raman spectroscopy were used to investigate the changes of single-walled carbon nanotubes (SWNT). The purity and yield of SWNT are improved due to reduced impurities stuck to the SWNT. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：309 / 312
页数：4
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