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.