MEASUREMENT OF THE POTENTIAL OF ZERO CHARGE OF SOLID ELECTRODES BY THE TIME-OF-CONTACT METHOD.

S. Efrima; E. Gileadi

doi:10.1149/1.2403591

MEASUREMENT OF THE POTENTIAL OF ZERO CHARGE OF SOLID ELECTRODES BY THE TIME-OF-CONTACT METHOD.

S. Efrima, E. Gileadi

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A new technique has been developed for the measurement of the potential of zero charge (PZC) of solid electrodes. The technique utilizes the repulsion between identically charged double layers (DL) and electrodes. This potential (or charge) dependent repulsion is shown to affect the time of contact (TOC) between two electrodes when one is struck by the other. It is shown that the TOC is a minimum at the PZC. Measurements on gold electrodes in perchloric acid solutions showed minima in the TOC near the potential plus 0. 01V SCE. In sodium iodide solutions the minimum of TOC was shifted cathodically corresponding to the expected shift of the PZC resulting from specific adsorption of iodide. This technique, after several improvements, is suggested for measuring the PZC of solid electrodes.

Original language	English
Pages (from-to)	879-882
Number of pages	4
Journal	Journal of the Electrochemical Society
Volume	120
Issue number	7
DOIs	https://doi.org/10.1149/1.2403591
State	Published - 1 Jan 1973

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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title = "MEASUREMENT OF THE POTENTIAL OF ZERO CHARGE OF SOLID ELECTRODES BY THE TIME-OF-CONTACT METHOD.",

abstract = "A new technique has been developed for the measurement of the potential of zero charge (PZC) of solid electrodes. The technique utilizes the repulsion between identically charged double layers (DL) and electrodes. This potential (or charge) dependent repulsion is shown to affect the time of contact (TOC) between two electrodes when one is struck by the other. It is shown that the TOC is a minimum at the PZC. Measurements on gold electrodes in perchloric acid solutions showed minima in the TOC near the potential plus 0. 01V SCE. In sodium iodide solutions the minimum of TOC was shifted cathodically corresponding to the expected shift of the PZC resulting from specific adsorption of iodide. This technique, after several improvements, is suggested for measuring the PZC of solid electrodes.",

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N2 - A new technique has been developed for the measurement of the potential of zero charge (PZC) of solid electrodes. The technique utilizes the repulsion between identically charged double layers (DL) and electrodes. This potential (or charge) dependent repulsion is shown to affect the time of contact (TOC) between two electrodes when one is struck by the other. It is shown that the TOC is a minimum at the PZC. Measurements on gold electrodes in perchloric acid solutions showed minima in the TOC near the potential plus 0. 01V SCE. In sodium iodide solutions the minimum of TOC was shifted cathodically corresponding to the expected shift of the PZC resulting from specific adsorption of iodide. This technique, after several improvements, is suggested for measuring the PZC of solid electrodes.

AB - A new technique has been developed for the measurement of the potential of zero charge (PZC) of solid electrodes. The technique utilizes the repulsion between identically charged double layers (DL) and electrodes. This potential (or charge) dependent repulsion is shown to affect the time of contact (TOC) between two electrodes when one is struck by the other. It is shown that the TOC is a minimum at the PZC. Measurements on gold electrodes in perchloric acid solutions showed minima in the TOC near the potential plus 0. 01V SCE. In sodium iodide solutions the minimum of TOC was shifted cathodically corresponding to the expected shift of the PZC resulting from specific adsorption of iodide. This technique, after several improvements, is suggested for measuring the PZC of solid electrodes.

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MEASUREMENT OF THE POTENTIAL OF ZERO CHARGE OF SOLID ELECTRODES BY THE TIME-OF-CONTACT METHOD.

Abstract

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