Mechanistic studies of formic acid oxidation at polycarbazole supported Pt nanoparticles

摘要: Abstract Mechanistic aspects of the promotion formic acid oxidation at Pt nanoparticles supported on a thin layer polycarbazole (PCZ) have been investigated by voltammetry and X-ray photoelectron spectroscopy (XPS). The were drop coated onto glassy carbon (GC) electrode with ca. 9 nm electrochemically deposited polycarbazole. After 500 s 0 V vs. SCE, current GC/PCZ/Pt was 25 times higher than GC/Pt electrode. Voltammetry in free H2SO4 following potentiostatic revealed that there less accumulation adsorbed intermediates for those directly with, 50% more sites remaining available relative to Independent CO stripping experiments only slight differences, while Cu underpotential deposition surprisingly resulted two-fold excess particles. This observation XPS which also second signal binding energy, suggesting electron donation into conjugated π system polymer. Such an interaction may be responsible its activity oxidation.