首页 | 本学科首页   官方微博 | 高级检索  
     

氧化处理方法与多壁碳纳米管表面羧基含量的关系
引用本文:邱军,王国建,屈泽华,苌璐.氧化处理方法与多壁碳纳米管表面羧基含量的关系[J].新型炭材料,2006,21(3):269-272.
作者姓名:邱军  王国建  屈泽华  苌璐
作者单位:同济大学,材料科学与工程学院,上海,200092
摘    要:从羧基定量化出发,采用红外光谱法、热重分析法和X-射线光电子能谱法详尽研究了氧化处理方法与多壁碳纳米管(MWCNTs)上引入羧基量的关系。结果表明,硝酸氧化法、混酸氧化法和混酸与过氧化氢共同氧化法均可以使MWCNTs表面产生羧基。热重分析法和XPS分析法可以定量分析MWCNTs表面羧基的含量,并且分析结果相近。XPS分析表明,2.5mol/L硝酸氧化48h可以使MWCNTs表面产生摩尔分数为4.80%的-COOH,而混酸(浓HNO3与浓H2SO4体积比为1:3)氧化4h可产生摩尔分数为5.35%的~COOH,如果进一步由质量分数20%的过氧化氢氧化2h,MWCNTs表面产生的-COOH摩尔分数提高到7.55%。

关 键 词:多壁碳纳米管  表面修饰  羧基化  氧化处理
文章编号:1007-8827(2006)03-0269-04
收稿时间:2005-11-30
修稿时间:2005-11-302006-05-17

Relationship between oxidation treatment method and carboxylic group content on the surface of MWCNTs
QIU Jun,WANG Guo-jian,QU Ze-hua,Chang Lu.Relationship between oxidation treatment method and carboxylic group content on the surface of MWCNTs[J].New Carbon Materials,2006,21(3):269-272.
Authors:QIU Jun  WANG Guo-jian  QU Ze-hua  Chang Lu
Affiliation:College of Material Science and Engineering, Tongji University, Shanghai 200092, China
Abstract:Carboxylic groups were produced on the surface of MWCNTs by oxidation treatment. Carboxylic group contents were quantitively analyzed by FTIR, TGA and XPS. Results show that TGA and XPS analysis give similar carboxylic group contents on the surface of MWCNTs. For 2.5 mol/L nitric acid oxidation for 4 h, mixed acid oxidation for 4 h, and mixed acid oxidation for 4 h and then 20 % H2O2 oxidation for 2 h, 4.80, 5.35 and 7.55 mol% of carboxylic groups on the were respectively produced.
Keywords:Multi-walled carbon nanotubes(MWCNTs)  Surface modification  Carboxylic group  Oxidation treatment
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号