Aa. Elshafei et al., ELECTROCATALYTIC OXIDATION OF FORMIC-ACID ON PT BINARY AND TERNARY ELECTRODES IN H3PO4, Journal of electroanalytical chemistry [1992], 362(1-2), 1993, pp. 159-165
The oxidation of formic acid on a Pt electrode is strongly catalysed b
y Pb, Tl, Cd and Ge adatoms. Under optimum conditions, the enhancement
decreases in the order Pb>Tl>Cd>Ge. The Pb adatoms enhance the height
of the peak at 0.5 V/RHE by more than 10-fold. The simultaneous under
potential deposition of Pb+Ge, Pb+Cd, Tl+Ge and Tl+Cd on a Pt electrod
e greatly enhances the electrocatalytic activity over that of single m
etal adatoms. Enhancement by binary adatoms decreases in the order PbGe>Ph+Cd>Tl+Ge>Tl+Cd.