Purification of Single-walled Carbon Nanotubes by Oxygen Oxidation in LiCl-KCl Molten Salt

被引：0
|
作者：
Qu Meizhen [1 ,2 ]
Lin Haoqiang [1 ]
Yu Zuolong [1 ]
机构：
[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
ACTA CHIMICA SINICA | 2010年 / 68卷 / 05期
关键词：
carbon nanotube; molten salt; amorphous carbon; oxygen oxidation; CATALYST;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The purification of SWCNT by oxygen oxidation in LiCl-KCl molten salt was investigated. 5 g of as-prepared SWCNT was suspended in 200 g of molten salt (w(LiCl) : w(KCl) = 55 : 45) at 470 degrees C by agitation. After 2 h oxidation in 300 mL.min(-1) oxygen flow, 3.8% of purified SWCNT was obtained. The oxidation degree could be controlled by adjusting the reaction temperature and oxygen flow rate. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Raman spectra were employed to characterize the as-prepared and purified SWCNT. The results indicated that almost all of the amorphous carbon in as-prepared SWCNT was removed. However, the SWCNT can survive from this purification process.
引用
收藏
页码：413 / 417
页数：5
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