Electrocatalytic Performances of Pure and Mixed Hexacyanoferrates of Cu and Pd for the Reduction of Hydrogen Peroxide

A study on the performances of mixed hexacyanoferrates of Cu and Pd (CuPdHCFs), potentiodynamically grown on glassy carbon surfaces, was carried out. Morphological (SEM‐EDX analysis) and electrochemical characterizations were performed, and the electrocatalytic ability of films with various composit...

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Veröffentlicht in:Electroanalysis (New York, N.Y.) N.Y.), 2010-08, Vol.22 (15), p.1695-1701
Hauptverfasser: Guadagnini, Lorella, Giorgetti, Marco, Tarterini, Fabrizio, Tonelli, Domenica
Format: Artikel
Sprache:eng
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Zusammenfassung:A study on the performances of mixed hexacyanoferrates of Cu and Pd (CuPdHCFs), potentiodynamically grown on glassy carbon surfaces, was carried out. Morphological (SEM‐EDX analysis) and electrochemical characterizations were performed, and the electrocatalytic ability of films with various compositions was tested by chronoamperometry. CuPdHCFs were found to display good electrocatalytic performances, with a maximum sensitivity of 45.3 mA M−1 cm−2 at 0.0 V vs. SCE (depending on the Cu and Pd ratio), against the value of 9.1 mA M−1 cm−2 obtained with pure copper hexacyanoferrate (CuHCF). Additionally, mixed hexacyanoferrates showed a higher pH and operational stability. The key role of Cu in Cu‐based hexacyanoferrates was investigated and highlighted.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.200900569