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Electrochemical properties of double wall carbon nanotube electrodes


Electrochemical properties of double wall carbon nanotubes (DWNT) were assessed and compared to their single wall (SWNT) counterparts. The double and single wall carbon nanotube materials were characterized by Raman spectroscopy, scanning and transmission electron microscopy and electrochemistry. The electrochemical behavior of DWNT film electrodes was characterized by using cyclic voltammetry of ferricyanide and NADH. It is shown that while both DWNT and SWNT were significantly functionalized with oxygen containing groups, double wall carbon nanotube film electrodes show a fast electron transfer and substantial decrease of overpotential of NADH when compared to the same way treated single wall carbon nanotubes.


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M. P. was supported by the Japanese Ministry for Education, Culture, Sports, Science and Technology (MEXT) through ICYS program. Author is grateful to Dr. Roberto Scipioni (ICYS, NIMS, Japan) for valuable discussions.

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Correspondence to Martin Pumera.

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Electronic supplementary material: The online version of this article (doi:10.1007/s11671-006-9035-3) contains supplementary material, which is available to authorized users. (PDF 4 MB)

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  • Double wall carbon nanotube
  • Single wall carbon nanotube
  • Electrochemistry
  • Cyclic voltammetry
  • NADH