Collect. Czech. Chem. Commun. 1997, 62, 843-848

Adsorption Effects of Thiourea at the Hg Electrode in Water-Dimethyl Sulfoxide Mixtures on Zn(II) Reduction

Barbara Marczewska

Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland


The adsorption of thiourea (TU) and the kinetics of Zn(II) reduction at mercury electrode from the solutions of NaClO4 in 10 and 70 vol.% dimethyl sulfoxide (DMSO) at various concentrations of TU have been studied. The obtained results indicate that in the process of Zn(II) electroreduction the dominant role is played by the structure of the primary solvation shell of Zn(II).

Keywords: Mixed solvent; Electroreduction; Mercury electrode; Solvation shell.