Cyclic voltammetry (CV) experiments were used to explore the chromium interaction behavior from an ionic liquid dependent solution which includes chromium chloride (CrCl3.6H2O) in choline chlorideethylene glycol (EG). The interaction experiments were performed in variance of scan rate, cathodic sweeping potential, concentration of metal ions, temperature effects and also the effect of surfactants. The effects on cyclic voltammetry of different experimental conditions and other parameters were studied using a Potentiostat/Galvanostat fitted with a potential sweeper. The electrochemical activity of Cr(III) on platinum substrates was investigated at different scan rate values and different potential windows within the temperature range from room temperature to 80 °C. The method of cathodic reduction has received special attention. The cyclic voltammograms reported at different scan rate values showed that the reduction process for Cr(III) is mainly regulated by the diffusion of the electro-active species to the surface of the electrode. It was suggested that the chromium ion reduction mechanism occurs in a one-step cycle that transfers three electrons and is regulated by the diffusion of chromium ions in the ionic liquid.

Keywords : Cyclic voltammetry; Chromium; Ethaline; Parameters; Effect.