Reduction efficiency analysis of Co(II)(CN)₅ ^4- in highly KOH medium using a divided electrolysis cell: A study with combinations of electrode = Reduction efficiency analysis of Co(II)(CN)₅ ^4- in highly KOH medium using a divided electrolysis cell: A study with combinations of electrode

다국어 초록 (Multilingual Abstract)

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)₅ ^4- 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)₅ ^4- reduction investigated using different cathodes like Ag, Cu, Zn and Carbon in 10 M KOH solution. The reduction of Co(II)(CN)₅ ^4- 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)₅ ^4-. Finally, there will be a discussion on the pair of electrodes combination on an effective reduction of Co(II)(CN)₅ ^4- as a mediator.