Glycerol electrocatalytic oxidation on Pt(1−2)Ru Sn O /Ti electrodes prepared by the polymeric precursor method

This work investigated the behavior of glycerol oxidation on Pt(1−2x)RuxSnxOy/Ti electrodes. Thermal decomposition of polymeric precursors furnished the catalysts at different compositions. Energy dispersive X-ray, scanning electronic microscopy, and cyclic voltammetry aided catalysts characterization. The electrodes presented high surface area and compositions similar to the nominal ones. Cyclic voltammetry and chronoamperometry showed that the glycerol oxidation current densities of mixed electrodes were higher than that of platinum alone at low potential values. The onset potential of glycerol oxidation shifted toward less positive values, showing that these materials facilitated oxidation as compared with platinum. The Pt0.8Ru0.1Sn0.10Oy/Ti electrode presented the highest electroactivity.