Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Electrochemical properties of double wall carbon nanotube electrodes | Nanoscale Res Lett 2007 2 87-93 DOI S11671-006-9035-3 NANO EXPRESS Electrochemical properties of double wall carbon nanotube electrodes Martin Pumera Published online 24 January 2007 to the author 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 Introduction Since the discovery of multi wall carbon nanotubes MWNT in 1991 by Iijima 1 and their single wall SWNT counterparts two years later 2 these nanoscale materials have attracted a vast interest because of Electronic supplementary material The online version of this article doi s11671-006-9035-3 contains supplementary material which is available to authorized users. M. Pumera El ICYS National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki Japan e-mail their unique chemical mechanical and electronic properties 3 . Their interesting electrochemical properties have led in to explosive research activity in the field of carbon nanotube-based electrochemical sensors in the recent years 4-10 . Majority of the carbon nanotube-modified electrodes have been prepared by casting NT films on the surface of glassy carbon electrodes using multi wall or single wall carbon nanotubes 11-16 . While the .
