H. Laborde et al., ELECTROCATALYTIC OXIDATION OF METHANOL AND C1 MOLECULES ON HIGHLY DISPERSED ELECTRODES .2. PLATINUM-RUTHENIUM IN POLYANILINE, Journal of Applied Electrochemistry, 24(10), 1994, pp. 1019-1027
The oxidation of methanol and Cl molecules at electrodes modified with
polyaniline and particles of platinum and ruthenium has been studied
in aqueous HClO4 electrolyte. The platinum and ruthenium particles wer
e incorporated into the polyaniline film by electrochemical reduction.
The activity for the oxidation of Cl molecules is higher for bimetall
ic electrodes than for polyaniline-coated electrodes modified with pla
tinum alone. Indeed, a negative shift of more than 100 mV is observed
as compared to the potential obtained with a polyaniline film modified
by pure platinum. Moreover, the oxidation of methanol is faster and m
ore complete on the Pt-Ru modified polyaniline electrode, since carbon
dioxide is the main reaction product.