Cyclic Voltammetry of Cobalt Chloride with L-Carrageenan (LK) Using Glassy Carbon Electrode

The redox behavior of cobalt chloride was studied voltammetrically in the presence and absence of L-Carrageenan (LK) as a natural polymer using glassy carbon electrodes in 0.1 M KCl supporting electrode. The interaction of CoCl2 with L-Carrageenan (LK) has been studied using a cyclic voltammetry technique in the potential range of +1.5 to -1.0 V and at different scan rates in water at 292.15 K using KCl (0.1M) as a supporting medium and glassy carbon as a working electrode. The study is valuable for evaluating the thermodynamic properties [3-18]. The cobalt ions show two oxidation peaks at 0.02 and 0.06 V and two reduction peaks at 0 and -0.7 V. These two peaks correspond to the oxidation of cobalt zero-valent to monovalent, and then that of cobalt monovalent to divalent cobalt scan rates is studied for the redox behaviors of CoCl2 alone or in the presence of L-Carrageenan (LK) natural polymer. Stability constants for the interaction of cobalt ions with L -Carrageenan (LK) natural polymer were evaluated.