Multi-step purification of carbon nanotubes

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	Multi-step purification of carbon nanotubes
	P. X. Hou ; S. Bai ; Q. H. Yang ; C. Liu ; H. M. Cheng
刊名	Carbon
	2002
卷号	40 期号:1 页码:81-85
关键词	carbon nanotubes
ISSN号	0008-6223
中文摘要	An efficient purification procedure for multi-walled carbon nanotubes (MWNTs) synthesized by the floating catalyst method was discussed. The process involves ultra-sonication, heat treatment in hot water, bromination, oxidation and acid treatment. Most of amorphous carbon, multishell carbon nanocapsules as well as metal particles were successfully removed from the MWNT product. With this procedure, MWNTs with purity of more than 94% were obtained and the yield could approach 50%. It was found that bromination took an important role in the purification of MWNTs. Transmission electron microscopy, XPS and thermo-gravimetric analysis were used to evaluate the purification process of MWNTs. The mechanism of bromination on purification of the MWNTs was also discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.
原文出处	://WOS:000173773400009
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/36290]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	P. X. Hou,S. Bai,Q. H. Yang,et al. Multi-step purification of carbon nanotubes[J]. Carbon,2002,40(1):81-85.
APA	P. X. Hou,S. Bai,Q. H. Yang,C. Liu,&H. M. Cheng.(2002).Multi-step purification of carbon nanotubes.Carbon,40(1),81-85.
MLA	P. X. Hou,et al."Multi-step purification of carbon nanotubes".Carbon 40.1(2002):81-85.