Original scientific paper

High Resistance Compensation Method for Surface Potential Measurement

Nikola Kallay ; Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Tajana Preočanin ; Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Atiđa Selmani ; Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Filip Šupljika ; Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
Ivan Leniček ; Department of Electrical Engineering Fundamentals and Measurements, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, HR-10000 Zagreb, Croatia

Abstract

The High Resistance Compensation Method (HRCM) was developed to measure the electrode potentials of high resistance electrodes. It is essentially similar to the classical Poggendorff compensation method, but instead of an ampere-meter, the pH-meter was introduced as an indicator of complete compensation. The method was applied to measurements of the electrode potentials of a single crystal rutile
(TiO₂) electrode. Electrode potentials were converted to surface potentials, and the dependency of the surface potential on pH in aqueous medium was determined.

Keywords

single crystal electrode; high resistance compensation; surface potential; rutile; Poggendorff

Hrčak ID:

38636

URI

https://hrcak.srce.hr/38636

Publication date:

30.6.2009.

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