Dispersity and stability measurement of functionalized multiwalled carbon nanotubes in alcohols

Hun Sik Kim, Minsung Kang, Won Il Park, Don Young Kim, Hyoung Joon Jin

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Multiwalled carbon nanotubes (MWCNTs) were dispersed in various alcohols such as methanol, ethanol and isopropanol using ultrasonication. In order to disperse the MWCNTs in the alcohols, they were treated using a mixture of H 2SO4 and HNO3 (3:1, vol/vol). The concentration of MWCNTs was approximately 0.03 wt.% and they formed a homogeneous dispersion in the alcohol solutions. The functional groups introduced on the surface of the MWCNTs during the acid treatment were characterized by Fourier transform-infrared spectroscopy and X-ray photoelectron spectroscopy. The dispersibility of the MWCNTs in the alcohols was characterized using atomic force microscopy, scanning electron microscopy and transmission electron microscopy. The stability of the MWCNT dispersions was also measured using a recently developed optical analyzer (Turbiscan).

Original languageEnglish
Pages (from-to)2493-2501
Number of pages9
JournalModern Physics Letters B
Volume22
Issue number25
DOIs
StatePublished - 10 Oct 2008

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MOST) (No. R01-2007-000-10438-0).

Keywords

  • Ethanol
  • Isopropanol
  • Methanol
  • Multiple light scattering
  • Multiwalled carbon nanotubes (MWCNTs)

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