Introducing a three-dimensional electrode based on electrochemically reduced graphene oxide/gold nano-micro islands
Paper ID : 1251-ICNS
Alireza Sanati *1, Keyvan Raeissi1, Fathallah Karimzadeh1, Mahsa Jalali2, Sara Sheibani3, Hojatollah Vali3, Sara Mahshid2
1Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
2Department of Bioengineering, McGill University, Montreal, Quebec H3A 0E9, Canada
3Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec H3A 0C7, Canada
Today, three dimensional (3D) electrodes have received a lot of attention in electrochemical applications including (bio)sensors and supercapacitors due to their high active surface area resulted from their 3D structure. In this study, we have presented a 3D electrode based on gold nano-micro islands (NMI)/electrochemically reduced graphene oxide (ERGO). Accordingly, after electrodeposition of NMI by chronoamperometry at 0 VAg/AgCl and for 200 s, graphene oxide was electrochemically reduced on the surface by sweeping potential between -0.4 to -1.5 VAg/AgCl. SEM investigations showed that the NMI structure is effective in distribution of ERGO on the surface. In fact, the NMI shrub-like structures act as pillars which keep ERGO on the surface. Finally, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used to show improved electrochemical behavior of the NMI electrode after successful deposition/reduction of GO. The fast and reliable used method in this research introduces a new electrode for electrochemical applications.
Electrochemically reduced graphene oxide; gold nano-micro islands (NMI); electrochemical behavior
Status : Abstract Accepted (Poster Presentation)