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1 2010

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Electrochemical studies on metal-hexacyano-cobaltate(III) thin solid films in aqueous electrolytes

Kasem K., Hanninger D., Croxford A., Phetteplace F.

Materials Science Poland

2010

Vol. 28, No. 2

439--449

Electrochemical behaviour of thin films of potassium/metal hexacyanocobaltate(III) (KMHCCo or KMx-1[Co(CN)6]y where M = Co, Fe, or Ru, in terms of reduction of small oxoanions was investigated. Glassy carbon electrodes modified with electrochemically prepared KMHCCo were used as the solid phase in the heterogeneous solid-liquid charge transfer process. The redox behaviours of the counter central ions of KMHCCo have been investigated in aqueous electrolytes using dynamic voltammetric techniques, and electrochemical impedance spectroscopy. The effect of supporting electrolyte components on the electrochemical behaviour was also investigated. Evidences for electrocatalytic capabilities for oxidation of glucose and for the reduction of BrO3- and IO3- were recorded.