The oxidation of formic acid at noble metal electrodes Part III. Intermediates and mechanism on platinum electrodes

摘要: Summary The charge required to oxidize the strongly bound intermediate on Pt electrodes in 1 M H2SO4 is determined (a) from sweep measurements extrapolated infinite speed, (b) oxidation of absence bulk reaction using a dipping technique. Both methods give value about 1.3 electrons per site. It suggested that Download : full-size image predominant species. rate formation this species dependent amount hydrogen adsorbed electrode and mechanisms are proposed account for this. follows simple model by Gileadi Srinivasan under conditions. Evidence Langmuir adsorption also obtained steady-state experiments. first anodic peak same mechanism as single Pd. Here formic acid oxidized CO2 via weakly . cannot be explained terms two-step or oxide inhibition, but can if an such formed.