THE ELECTROCATALYTIC PROPERTIES OF PD-BASED MODIFIED ELECTRODES IN D-GLUCOSE OXIDATION

The electrooxidation of D-glucose on Pd-based modified electrodes was investigated. The adsorption of Cu, Bi, Pb, Cd, Tl metals on Pd electr odes made it possible to prepare modified Pd electrodes with different coverages and to characterize them voltammetrically. Such modified el ectrodes had electrocatalytic properties for D.glucose oxidation diffe rent from those of the unmodified Pd electrode. On the other hand, Pd- Au alloys with different surface compositions were prepared by electro chemical and metallurgic methods and the catalytic activities of these alloys were also investigated, for D-glucose oxidation. No synergisti c effect was seen.