The electroanalytic performances of glassy carbon paste electrode (GCPE), multi-walled carbon nanotube (MWCNT)-GCPE and double-walled carbon nanotube (DWCNT)-GCPE, which include HNO 3 washed/unwashed materials, were compared by monitoring cyclic voltammograms of potassium ferricyanide and catechol. Electrodes were prepared by introducing proper amount of DWCNT and MWCNT into GCPE. First untreated materials (DWCNT, MWCNT, GC μ-particles) were used in the electrodes and then HNO 3-treated materials were utilized for comparing difference in electrochemical performances. The effect of treatment procedure was also examined by applying Raman spectroscopy to treated and untreated materials. Moreover, TEM images were obtained for further investigation of MWCNT and DWCNT.
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Acknowledgments This work was supported in part by the World Premier International Research Center (WPI) Initiative on Materials Nanoarchitectonics, MEXT, Japan (M.P.). U.A. and M.P. acknowledge support by NIMS Open Research Institute fund (NIMS ORI).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics