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Open Access Nano Express

Electrochemical properties of double wall carbon nanotube electrodes

Martin Pumera

Author Affiliations

ICYS, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, Japan

Nanoscale Research Letters 2007, 2:87-93  doi:10.1007/s11671-006-9035-3

Published: 24 January 2007

Abstract

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.

Keywords:
Double wall carbon nanotube; Single wall carbon nanotube; Electrochemistry; Cyclic voltammetry; NADH