Elimination of D-band in Raman spectra of double-wall carbon nanotubes by oxidation

被引：188

作者：

Osswald, S

Flahaut, E

Ye, H

Gogotsi, Y

机构：

[1] Drexel Univ, Mat Sci & Engn Dept, Philadelphia, PA 19104 USA

[2] Drexel Univ, AJ Drexel Nanotechnol Inst, Philadelphia, PA 19104 USA

[3] Univ Toulouse 3, UMR CNRS 5085, Ctr Interuniv Rech & Ingn Mat, F-31062 Toulouse, France

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 402卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.12.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this Letter, we present an in situ Raman spectroscopy study of oxidation-induced changes in the structure and composition of double-wall carbon nanotubes (DWCNTs). Above 480 degreesC, the intensity of the D band decreases to less than 0.01% of the G band intensity, when measured using the 780 nm laser excitation. The D band was absent from the Raman spectra recorded with the 514.5 nm excitation. Thermogravimetric analysis and high-resolution transmission electron microscopy are used to explain the observed results. We conclude that oxidation provides a purification method for the DWCNT which leads to a sample containing tubes having nearly clean surfaces without disordered carbon. (C) 2004 Elsevier B.V. All rights reserved.

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页码：422 / 427

页数：6

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