Methanol, Ethanol, and Formic Acid Oxidation on New Platinum-Containing Catalysts

Electrooxidation of methanol, ethanol, and formic acid was studied on three platinum-containing electrocatalysts: PtCu/C, Pt/(SnO2/C), Pt/C, Pt content being about 20 wt%. In all reactions, the integral specific activity catalysts, estimated from results cyclic voltammetry, grows in Pt/C < Pt/(SnO2/C) PtCu/C row. The influence reagent nature subjected to electrooxidation is manifested both difference absolute rate values corresponding decreasing order CH3OH > HCOOH C2H5OH, different ratio these rates catalysts at potentials. catalyst containing SnO2 nanoparticles most active among methanol reactions under potentiostatic conditions E = 0.60 V. Moreover, reaction it significantly superior even PtRu/C commercial catalyst. reasons for positive Cu atoms catalytic platinum are presumably associated with effects: Interaction d-orbitals copper bimetallic implementation bifunctional catalysis mechanism adjacent tin dioxide nanoparticles.