On the oxidation of isopropanol on platinum single crystal electrodes. A detailed voltammetric and FTIR study

Isopropanol oxidation is studied on platinum single crystals using electrochemical techniques and FTIR spectroscopy at different isopropanol concentrations. found to be facilitated by the presence of adsorbed OH electrode surface, which reacts with an molecule yield alkoxide. Thus, when sulfuric acid used as supporting electrolyte instead perchloric acid, currents diminish drastically since sulfate hinders adsorption. Kinetic measurements reveal that chemical reaction between rate-determining step in mechanism. Voltammetric experiments show acetone major product reaction. On Pt(111) produced exclusively, are controlled diffusion since, this electrode, not mobility high. The adsorption acetone-related species Pt(110) partially block leads slightly lower currents. other hand, Pt(100) one showing significant rates for C–C bond cleavage, yielding CO species. Although route a minor path, surface blockage these diminution