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Interaction Between Carbonaceous Structure and Functionalized Single-Walled Carbon Nanotubes

Authors
Lee, Jung-AhLee, Byung ChulLee, Sang-MyungPaek, Kyeong-KapJu, Byeong-KwonLee, Yun-HiShin, Hyun Joon
Issue Date
2010
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.157, no.6, pp.K131 - K137
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume
157
Number
6
Start Page
K131
End Page
K137
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/118632
DOI
10.1149/1.3355946
ISSN
0013-4651
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. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3355946] All rights reserved.
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공과대학 (전기전자공학부)
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