Electrocatalytic Oxidation of Ethylene Glycol on Carbon Paste Modified Electrode with Poly (n,n dimethyl aniline) /Ni-Co

The electrooxidation of ethylene glycol (EG) on CPE/Poly (N,N–dimethyl aniline)-(SDS) (CPE/PDMAN-SDS) with different proportions of Ni (II) and Co (II) in 1 M NaOH was studied by cyclic voltammetry. The results show that formed layers at the surface of the electrodes behave as an efficient electrocatalyst for the oxidation of EG in alkaline medium via the Ni (III) and Co (III) species. These modified electrodes exhibit high electrocatalytic activity and stability inalkaline solution, showing oxidation peaks at low potentials with high current densities. The effects of various parameters such as potential scan rates, EG concentration and the supporting electrolytes on the electrooxidation of EG are also investigated.

Keywords:

Electrocatalytic oxidation , Ethylene glycol , Nickel-cobalt , Alkaline medium