Electrocatalytic properties of conducting polymer based composite film containing dispersed platinum microparticles towards oxidation of methanol

• Published in: Electrochimica acta Vol. 44; no. 12; pp. 2131 - 2137
• Main Authors: Kulesza, Pawel J, Matczak, Monika, Wolkiewicz, Anna, Grzybowska, Bozena, Galkowski, Mariusz, Malik, Marcin A, Wieckowski, Andrzej
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 1999; Elsevier
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Special properties (catalyst, reagent or carrier); Conducting polymers; Electrocatalysis; Platinum; Temperature effect; Pyrrole derivative polymer; Ruthenium Complexes; Doped polymer; Oxidation; Experimental study; Catalyst activity; Methanol; Catalyst support
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/S0013-4686(98)00321-1

We demonstrate the usefulness of poly-N-methylpyrrole as a matrix for the fabrication of a composite film containing spatially dispersed platinum and highly reactive Ru oxo centers in a form of polynuclear ruthenium(III, IV) oxide/cyanoruthenates. It comes from scanning electron micrography that spherical Pt microparticles are randomly dispersed in the film. Cyclic voltammetry has been employed to characterize electrocatalytic oxidation of methanol at Pt-free and platinized composite films at ambient (20°C) and increased (60°C) temperatures. The presence of ruthenium(III, IV) oxide/cyanoruthenate species in the composite film increases the catalytic activity of Pt towards methanol oxidation.