Solubilization of single-walled carbon nanotubes using Ozone generated by dielectric barrier discharge

Wei Sun, Usama Khaled, Hironari Tomita, Zhenyu Li, Kiminobu Imasaka, Junya Suehiro

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

This paper describes effects of ozone (O3) concentration on water-solubility of single-walled carbon nanotubes (SWCNTs). Ozone was generated by dielectric barrier discharge (DBD) in atmospheric air with the maximum concentration of 220 ppm. Water solubility of ozone-treated SWCNTs, which was evaluated by optical absorbance of the SWCNT suspension, increased with ozone treatment time and reached the maximum in 60 min. The dispersed SWCNTs suspension was stable even after two months of the ozone treatment. Fourier transform infrared (FTIR) spectroscopy and Raman spectra analysis revealed that SWCNTs surface was functionalized with chemical group such as -COO- after the ozone treatment. The longer ozone treatment introduced more functional groups and decreased zeta potential of the SWCNT surface, which improved watersolubility of the SWCNTs due to electrostatic repulsion force between them. It was also found that the ozone treatment induced morphological changes of SWCNTs.

元の言語英語
ページ(範囲)550021-550025
ページ数5
ジャーナルJapanese Journal of Applied Physics
49
発行部数5 PART 1
DOI
出版物ステータス出版済み - 5 1 2010

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Single-walled carbon nanotubes (SWCN)
Ozone
ozone
carbon nanotubes
solubility
Solubility
Zeta potential
Discharge (fluid mechanics)
Spectrum analysis
Functional groups
water
Fourier transform infrared spectroscopy
spectrum analysis
Raman scattering
Water
Electrostatics
infrared spectroscopy
Raman spectra
electrostatics
air

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

これを引用

Solubilization of single-walled carbon nanotubes using Ozone generated by dielectric barrier discharge. / Sun, Wei; Khaled, Usama; Tomita, Hironari; Li, Zhenyu; Imasaka, Kiminobu; Suehiro, Junya.

:: Japanese Journal of Applied Physics, 巻 49, 番号 5 PART 1, 01.05.2010, p. 550021-550025.

研究成果: ジャーナルへの寄稿記事

Sun, Wei ; Khaled, Usama ; Tomita, Hironari ; Li, Zhenyu ; Imasaka, Kiminobu ; Suehiro, Junya. / Solubilization of single-walled carbon nanotubes using Ozone generated by dielectric barrier discharge. :: Japanese Journal of Applied Physics. 2010 ; 巻 49, 番号 5 PART 1. pp. 550021-550025.
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