Study of the Graphite Electrode Surface with In and Pt Deposits

Elvira M. Ustinova; Anatolii Ya. Pshenichkin; Nina A. Kolpakova

doi:10.4028/www.scientific.net/AMR.1040.376

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1040Study of the Graphite Electrode Surface with In...

Study of the Graphite Electrode Surface with In and Pt Deposits

Abstract:

Electrolytic deposit of indium, platinum and platinum-indium alloy on the surface of graphite electrodes has been studied using the scanning electron microscopy and the stripping voltammetry. The scanning electron microscopy method has revealed that platinum-indium alloy on the surface of the graphite electrode contains indium, platinum and chlorine. But platinum is unable to be determined on the surface of the graphite electrode without a metal activator due to its precipitation in very small quantities. Under the anodic oxidation of indium-platinum precipitation, the anodic peaks caused by the selective electro-oxidation of indium from the intermetallic compounds with platinum are observed on the current-voltage curves. Wherein, platinum remains on the electrode surface, and can be oxidized from the electrode at the potentials of the electrode purification (more than 1 V).

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Periodical:

Advanced Materials Research (Volume 1040)

Pages:

376-381

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1040.376

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Online since:

September 2014

Authors:

Elvira M. Ustinova*, Anatolii Ya. Pshenichkin, Nina A. Kolpakova

Keywords:

Binary Alloy, Electron Microscopy, Graphite Electrode, Indium, Intermetallic Compound, Platinum, Stripping Voltammetry

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References

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