Ozonolysis of functionalized single-walled carbon nanotubes

被引：11

作者：

Chen, Zheyi ^{[1
]}

Hauge, Robert H. ^{[1
]}

Smalley, Richard E. ^{[1
]}

机构：

[1] Rice Univ, Dept Chem, Ctr Nanoscale Sci & Technol, Houston, TX 77005 USA

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2006年 / 6卷 / 07期

关键词：

ozonolysis; fluorination; phenyl-sulfonation; oxidative cutting;

D O I：

10.1166/jnn.2006.336

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Room temperature ozonolysis of fluorinated SWNT and phenyl-sulfonated SWNT have been studied in perfluoropolyether (PFPE) solvents. Etching at the end caps (similar to 70 nm/hour for fluorinated SWNT/PFPE suspension with 1 g/l concentration) has been demonstrated to be the dominating effect during the ozonolysis of fluorinated SWNT Base on characterization by AFM analysis, X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy, fluorination along the SWNT sidewalls protects F-SWNT from extensive functionalization by ozonolysis. An ozone reaction with fluorinated SWNT has been found to improve its solubility in 96% sulfuric acid. This allows oxidative cutting by ammonium peroxydisulfate without defluorination. In comparison to fluorinated SWNT, phenyl-sulfonated SWNT was found to be effectively and homogeneous cut by ozonolysis in a water suspension.

引用

页码：1935 / 1938

页数：4

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