Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy

DOI Web Site Web Site 被引用文献7件

書誌事項

公開日
2007-04-11
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/jrs.1686
公開者
Wiley

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>Multiwalled carbon nanotubes (MWCNTs) were oxidized in air and acids while varying the treatment time and/or temperature. The goal of this approach was to create the highest density of carboxyl groups with moderate sample loss, which is necessary for nanocomposite applications. <jats:italic>In situ</jats:italic> Raman experiments allowed real‐time observation of the structural changes in MWCNTs upon oxidation. The ratio of the Raman intensities of the D and G bands was used to estimate the concentration of defects. It was found that while an oxidation for 6 h in H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub>/HNO<jats:sub>3</jats:sub> provided the strongest effect, a ‘flash oxidation’ in air (15 min at 550 °C) also leads to an efficient functionalization in a cost‐effective and environmentally friendly way. Transmission electron microscopy, Fourier‐transform infrared (FTIR) spectroscopy, thermogravimetric analysis and electrophoretic mobility analysis were used to study the oxidized nanotubes. Copyright © 2007 John Wiley & Sons, Ltd.</jats:p>

収録刊行物

被引用文献 (7)*注記

もっと見る

問題の指摘

ページトップへ