Original scientific paper

https://doi.org/10.5562/cca3206

The Effects on the Response of Metal Oxide and Fluorite Single Crystal Electrodes and the Equilibration Process in the Interfacial Region

Tajana Preočanin orcid.org/0000-0002-6670-6503 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Danijel Namjesnik orcid.org/0000-0002-8963-0169 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Tin Klačić orcid.org/0000-0003-2506-8688 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Petar Šutalo ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia

Abstract

Inner surface potential, one of the most important variables affecting the interfacial equilibrium of metal oxide aqueous systems, obtained by means of single crystal electrode gives valuable information about electrical charging of the metal oxide/aqueous electrolyte solu¬tion interfaces. The influence of the potential determining ions and ionic strength on the measured electrode potential as well as time of the equilibration, direction of the titration and the effect of the magnetic stirring enables the critical examination of the processes which take place during the interfacial equilibrium. For that purpose, the selected metal oxides (hematite, ceria, sapphire, and rutile) and fluorite single crystal electrodes were examined.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

single crystal electrode; inner surface potential; electrical double layer; metal oxide; fluorite; surface complexation; stirring effect

Hrčak ID:

187194

URI

https://hrcak.srce.hr/187194

Publication date:

3.7.2017.

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