| LiCl-KCl熔盐中纯氧氧化提纯单壁碳纳米管 |
| |
| 引用本文： | 瞿美臻,林浩强,于作龙.LiCl-KCl熔盐中纯氧氧化提纯单壁碳纳米管[J].化学学报,2010,68(5):413-417. |
| |
| 作者姓名： | 瞿美臻 林浩强 于作龙 |
| |
| 作者单位： | 1. 中国科学院成都有机化学研究所,成都,610041;中国科学院研究生院,北京,100039
2. 中国科学院成都有机化学研究所,成都,610041 |
| |
| 基金项目： | 国家科技部重大科学研究计划(No.2006CB9327);;中国科学院知识创新工程重要方向(No.KJCX2-YW-M01)资助项目 |
| |
| 摘 要： | 以LiCl-KCl(wLiCl∶wKCl=55∶45)熔盐为反应介质,对在熔盐中纯氧氧化提纯单壁碳纳米管(SWCNT)进行了研究.发现可以通过控制熔盐温度和氧气流量来控制氧化反应温和地进行.将5gSWCNT粗产品分散在200g熔盐中,在470℃下用300mL?min-1氧气氧化2h可获得3.8%SWCNT收率.采用TEM,SEM,TGA和Raman谱对提纯前后SWCNT的形貌和组成进行了分析,发现提纯后SWCNT产品中无定形碳被有效去除,而SWCNT结构未发现明显变化.
|
| 关 键 词： | 碳纳米管 熔盐 无定形碳 氧气氧化 |
| 收稿时间： | 2009-06-15 |
| 修稿时间： | 2009-09-29 |
Purification of Single-walled Carbon Nanotubes by Oxygen Oxidation in LiCl-KCl Molten Salt |
| |
| Qu,Meizhen,Lin,Haoqiang,Yu,Zuolong.Purification of Single-walled Carbon Nanotubes by Oxygen Oxidation in LiCl-KCl Molten Salt[J].Acta Chimica Sinica,2010,68(5):413-417. |
| |
| Authors: | Qu Meizhen Lin Haoqiang Yu Zuolong |
| |
| Institution: | aChengdu Institute of Organic Chemistry;Chinese Academy of Sciences;Chengdu 610041;bGraduate University of Chinese Academy of Sciences;Beijing 100039 |
| |
| Abstract: | The purification of SWCNT by oxygen oxidation in LiCl-KCl molten salt was investigated. 5 gof as-prepared SWCNT was suspended in 200 g of molten salt (W_(LiCl): W_(KCl)=55: 45) at 470 ℃ 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. |
| |
| Keywords: | carbon nanotube molten salt amorphous carbon oxygen oxidation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《化学学报》浏览原始摘要信息 |
| 点击此处可从《化学学报》下载免费的PDF全文 |
|
