Electrocatalytic Performances of Pure and Mixed Hexacyanoferrates of Cu and Pd for the Reduction of Hydrogen Peroxide |
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| Authors: | Lorella Guadagnini Marco Giorgetti Fabrizio Tarterini Domenica Tonelli |
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| Affiliation: | 1. Dipartimento di Chimica Fisica ed Inorganica, University of Bologna, Viale Risorgimento, 4 40136?Bologna, Italy, INSTM, UdR Bologna, Italy, fax: +39?0512093690;2. Dipartimento di Scienza dei Metalli, Elettrochimica e Tecniche Chimiche, Viale Risorgimento, 4 40136?Bologna, Italy, INSTM, UdR Bologna, Italy |
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| Abstract: | 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. |
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| Keywords: | Mixed metal hexacyanoferrates Hydrogen peroxide Electrocatalysis Modified electrode Copper |
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