Ellipsometric Study of Oxygen-Containing Films on Platinum Anodes
- 15 January 1968
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 48 (2) , 671-675
- https://doi.org/10.1063/1.1668699
Abstract
Ellipsometry is applied to study the oxidation of platinum in sulfuric acid solution. Steady‐state and transient measurements show that oxide‐film formation commences when the potential is anodic to 0.95 V. The film is light absorbing. The film thickness increases linearly with potential. A mechanism of film growth based on place exchange is developed.Keywords
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