Influence of thiourea on the activation energy of the electroreduction process of Zn(II) in mixed solvents on the mercury electrode

Authors
Marczewska, B Wloszek, J Kozlowska, U
Citation
B. Marczewska et al., Influence of thiourea on the activation energy of the electroreduction process of Zn(II) in mixed solvents on the mercury electrode, ELECTROANAL, 11(4), 1999, pp. 243-248
Citations number
19
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ELECTROANALYSIS
ISSN journal
10400397 → ACNP
Volume
11
Issue
4
Year of publication
1999
Pages
243 - 248
Database
ISI
SICI code
1040-0397(199904)11:4<243:IOTOTA>2.0.ZU;2-5
Abstract
The kinetics of the Zn-II electroreduction has been studied in H2O, H2O + m ethanol (MeOH), H2O + dimethylsulfoxide (DMSO) mixtures as well as in these solutions with an addition of thiourea (TU) as a function of temperature. The diffusion coefficients, the formal potentials and the standard rare con stants have been determined. These measurements made it possible to obtain the real activation energy of the electrode process. The presence of TU dec reased the values of the real energy of activation of the electrode process in all the investigated solutions.