Evaluation of Sodium Dodecyl Sulfate Effect on Electrocatalytic Properties of Poly (4- aminoacetanilide) / Nickel Modified Carbon Paste Electrode as an Efficient Electrode Toward Oxidation of Ethylene Glycol

Poly (p- aminoacetanilide) (PPAA) was prepared by oxidation of PAA in acidic aqueous solution in the presence of sodium dodecyl sulfate (SDS) on the surface of a carbon paste electrode (CPE). Then Ni(II) ions were incorporated to the polymer by immersion of the modified electrode in a 0.1 M Ni(II) ion solution. The electrochemical study of this modified electrode was investigated by using cyclic voltammetry and chronoamperometry techniques. The electrochemical study of this modified electrode exhibits stable redox behavior of the Ni(III)/Ni(II) couple. Also, this polymeric modified electrode has a very good activity toward the ethylene glycol (EG) electrooxidation in a 0.1 M NaOH solution. Finally, by using a chronoamperometric technique, the catalytic rate constant (k) for ethylene glycol was calculated 1.1× 104 cm3 mol-1 s-1.

Keywords:

Poly (4- aminoacetanilide) , carbon paste electrode , ethylene glycol