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Electrochemical and Solid State Letters, Vol.12, No.8, E17-E19, 2009
Electrocatalytic Reduction of Carbon Dioxide by Cobalt-Phthalocyanine-Incorporated Polypyrrole
In the quest for catalysts for the electrocatalytic reduction of CO2, a cobalt phthalocyanine/polypyrrole (CoPc/PPy) composite electrode has been developed. The electrode is prepared by drop casting CoPc onto the PPy film from the CoPc/tetrahydrofuran solution (1 mg/mL). The onset potential for CO2 reduction occurred at potentials 160 mV more positive than observed with a simple PPy electrode. Furthermore, in the potentiostatic electrolysis, the catalytic current for CO2 reduction at CoPc/PPy was very stable, with a higher current density and current efficiency when compared to the PPy electrode.
Keywords:carbon compounds;catalysis;cobalt compounds;composite materials;electrochemical electrodes;electrolysis;organic compounds;reduction (chemical)