Anodic Deposition of Ferric Oxy‐Hydroxide Films on Platinum from Perchlorate Solutions
- 1 January 1974
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 121 (1) , 37-42
- https://doi.org/10.1149/1.2396827
Abstract
The effect of pH and added anions such as phosphate, acetate, chloride, or sulfate in perchlorate solutions on the anodic deposition of ferric oxy‐hydroxide films on platinum was studied. In all cases deposition took place by the oxidation of a ferrous species to a ferric film with 100% current efficiency. The growth rate of the film was dependent on the concentration of FeOH + ion which was the depositing species in a ferrous perchlorate solution and in the solutions containing acetate, chloride, or sulfate. In the solution contain‐ing phosphate, the anodic deposition proceeded by the simultaneous oxidation of FeOH + and FeH 2 PO 4 + ions to γ ‐ FeOOH and FePO 4 · 2 H 2 O .Keywords
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