Preparation and characterization of sulfonic acid-functionalized single-walled carbon nanotubes

被引：57

作者：

Adams, Luqman ^{[1
]}

Oki, Aderemi ^{[1
]}

Grady, Tony ^{[1
]}

McWhinney, Hylton ^{[1
]}

Luo, Zhiping ^{[2
]}

机构：

[1] Prairie View A&M Univ, Dept Chem, Prairie View, TX 77446 USA

[2] Texas A&M Univ, Microscopy & Imaging Ctr, College Stn, TX 77843 USA

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2009年 / 41卷 / 04期

关键词：

Carbon nanotubes; Sulfonic acid; ATTACHMENT;

D O I：

10.1016/j.physe.2008.11.018

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A strategy for the functionalization of single-walled carbon nanotubes is reported. The synthesis involved the conversion of fluorinated single-walled carbon nanotubes to the thiolated derivative assisted by phosphorous pentasulfide. The thiol group is then quantitatively oxidized to the sulfonic acid group. The extent of oxidation of the thiol precursor is confirmed using X-ray photoelectron spectroscopy, which proved to be immensely useful to discriminate between the -SH and -SO3H with a chemical shift for the sulfur 2p (approx. 5eV). The functionalized carbon nanotubes were further characterized by infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy which revealed a significant change in morphology between the fluoro carbon nanotubes, the thiol and sulfonic acid-modified carbon nanotubes. Published by Elsevier B.V.

引用

页码：723 / 728

页数：6

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