Interaction between carbonaceous structure and functionalized single-walled carbon nanotubes

Jung Ah Lee, Byung Chul Lee, Sang Myung Lee, Kyeong Kap Paek, Byeong Kwon Ju, Yun-Hi Lee, Hyun Joon Shin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The properties of functionalized single-walled carbon nanotube (f-SWCNT) supernatant samples obtained through steps of acid oxidation-centrifugation- decantation were characterized by spectroscopic tools. Fourier transform IR spectroscopy provided evidence for the chemical and structural variations generated on the f-SWCNTs within each supernatant sample. The results from UV-visible near-IR spectroscopy revealed that the density difference of the carbonaceous impurity with functional groups on the f-SWCNTs contributed to the attenuation of electrical conductivity. In the Raman results, the shift of frequency in the radial breathing mode (RBM) was associated with an increase in diameter of the f-SWCNTs and a decrease in RBM intensity was attributed to the depletion of valence band electrons. The redshift of the tangential mode indicates the reduction in the bandgaps of the f-SWCNTs by the decrease in carbonaceous impurity.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume157
Issue number6
DOIs
Publication statusPublished - 2010 Nov 1

Fingerprint

Single-walled carbon nanotubes (SWCN)
Infrared spectroscopy
carbon nanotubes
Impurities
breathing
Centrifugation
Valence bands
Functional groups
impurities
Fourier transforms
Energy gap
interactions
Oxidation
spectroscopy
Acids
Electrons
depletion
attenuation
valence
oxidation

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Interaction between carbonaceous structure and functionalized single-walled carbon nanotubes. / Lee, Jung Ah; Lee, Byung Chul; Lee, Sang Myung; Paek, Kyeong Kap; Ju, Byeong Kwon; Lee, Yun-Hi; Shin, Hyun Joon.

In: Journal of the Electrochemical Society, Vol. 157, No. 6, 01.11.2010.

Research output: Contribution to journalArticle

Lee, Jung Ah ; Lee, Byung Chul ; Lee, Sang Myung ; Paek, Kyeong Kap ; Ju, Byeong Kwon ; Lee, Yun-Hi ; Shin, Hyun Joon. / Interaction between carbonaceous structure and functionalized single-walled carbon nanotubes. In: Journal of the Electrochemical Society. 2010 ; Vol. 157, No. 6.
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