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Title: Origin of a Raman scattering peak generated in single-walled carbon nanotubes by X-ray irradiation and subsequent thermal annealing

Abstract

We have found that a Raman scattering (RS) peak around 1870 cm{sup −1} was produced by the annealing of the X-ray irradiated film of single-walled carbon nanotubes (SWNTs) at 450 {sup o}C. The intensity of 1870-cm{sup −1} peak showed a maximum at the probe energy of 2.3 eV for the RS spectroscopy with various probe lasers. Both the peak position and the probe-energy dependence were almost identical to those of the one-dimensional carbon chains previously reported in multi-walled carbon nanotubes. Consequently, we concluded that the 1870-cm{sup −1} peak found in the present study is attributed to carbon chains. The formation of carbon chains by the annealing at temperature lower than 500 {sup o}C is firstly reported by the present study. The carbon chains would be formed by aggregation of the interstitial carbons, which are formed as a counterpart of carbon vacancies by X-ray irradiation diffused on SWNT walls. The result indicates that the combination of X-ray irradiation and subsequent thermal annealing is a feasible tool for generating new nanostructures in SWNT.

Authors:
; ;  [1];  [2]
  1. Department of Materials Science, Wakayama University, 930 Sakaedani, Wakayama 640-8510 (Japan)
  2. Department of Physics, Wakayama University, 930 Sakaedani, Wakayama 640-8510 (Japan)
Publication Date:
OSTI Identifier:
22611418
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AGGLOMERATION; ANNEALING; CARBON NANOTUBES; ENERGY DEPENDENCE; FILMS; IRRADIATION; ONE-DIMENSIONAL CALCULATIONS; RAMAN EFFECT; SCATTERING; SPECTROSCOPY; VACANCIES; X RADIATION

Citation Formats

Murakami, Toshiya, Matsuda, Mitsuaki, Itoh, Chihiro, E-mail: citoh@sys.wakayama-u.ac.jp, and Kisoda, Kenji. Origin of a Raman scattering peak generated in single-walled carbon nanotubes by X-ray irradiation and subsequent thermal annealing. United States: N. p., 2016. Web. doi:10.1063/1.4960728.
Murakami, Toshiya, Matsuda, Mitsuaki, Itoh, Chihiro, E-mail: citoh@sys.wakayama-u.ac.jp, & Kisoda, Kenji. Origin of a Raman scattering peak generated in single-walled carbon nanotubes by X-ray irradiation and subsequent thermal annealing. United States. doi:10.1063/1.4960728.
Murakami, Toshiya, Matsuda, Mitsuaki, Itoh, Chihiro, E-mail: citoh@sys.wakayama-u.ac.jp, and Kisoda, Kenji. Mon . "Origin of a Raman scattering peak generated in single-walled carbon nanotubes by X-ray irradiation and subsequent thermal annealing". United States. doi:10.1063/1.4960728.
@article{osti_22611418,
title = {Origin of a Raman scattering peak generated in single-walled carbon nanotubes by X-ray irradiation and subsequent thermal annealing},
author = {Murakami, Toshiya and Matsuda, Mitsuaki and Itoh, Chihiro, E-mail: citoh@sys.wakayama-u.ac.jp and Kisoda, Kenji},
abstractNote = {We have found that a Raman scattering (RS) peak around 1870 cm{sup −1} was produced by the annealing of the X-ray irradiated film of single-walled carbon nanotubes (SWNTs) at 450 {sup o}C. The intensity of 1870-cm{sup −1} peak showed a maximum at the probe energy of 2.3 eV for the RS spectroscopy with various probe lasers. Both the peak position and the probe-energy dependence were almost identical to those of the one-dimensional carbon chains previously reported in multi-walled carbon nanotubes. Consequently, we concluded that the 1870-cm{sup −1} peak found in the present study is attributed to carbon chains. The formation of carbon chains by the annealing at temperature lower than 500 {sup o}C is firstly reported by the present study. The carbon chains would be formed by aggregation of the interstitial carbons, which are formed as a counterpart of carbon vacancies by X-ray irradiation diffused on SWNT walls. The result indicates that the combination of X-ray irradiation and subsequent thermal annealing is a feasible tool for generating new nanostructures in SWNT.},
doi = {10.1063/1.4960728},
journal = {AIP Advances},
number = 8,
volume = 6,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}