| 초록 |
Utilization of full electrochemical cell in the form of MEO (mediated electrochemical oxidation) and MER (mediated electrochemical reduction) process is a frontier technology to be developed. In order to operate the full electrochemical cell, electrode combination considered as a key role among many. In this regard, the present investigation focuses on reduction efficiency of Co(II)(CN)54- especially at different combinations of electrodes. At first step, current density, temperature, and anodic part (Pt electrode as anode in 5 M H2SO4) kept constant. The Co(II)(CN)54- reduction investigated using different cathodes like Ag, Cu, Zn and Carbon in 10 M KOH solution. The reduction of Co(II)(CN)54- confirmed via ORP electrode by its reduction potential variation. The oxidation/reduction efficiencies calculated using titration with FeSO4 and KMnO4. Additionally, cyclic voltammetry, and surface analysis, like SEM and XRD, of electrode paved to support the electrode combination on effective reduction of Co(II)(CN)54-. Finally, there will be a discussion on the pair of electrodes combination on an effective reduction of Co(II)(CN)54- as a mediator. |
