CATALYTIC INFLUENCE OF UNDERPOTENTIALLY DEPOSITED SUBMONOLAYERS OF DIFFERENT METALS IN ETHYLENE-GLYCOL OXIDATION ON VARIOUS NOBLE-METAL ELECTRODES IN ALKALINE-MEDIUM
Aa. Elshafei et al., CATALYTIC INFLUENCE OF UNDERPOTENTIALLY DEPOSITED SUBMONOLAYERS OF DIFFERENT METALS IN ETHYLENE-GLYCOL OXIDATION ON VARIOUS NOBLE-METAL ELECTRODES IN ALKALINE-MEDIUM, Journal of power sources, 46(1), 1993, pp. 17-27
The electrochemical oxidation of ethylene glycol has been studied on P
t, Pd and Au electrodes in alkaline medium in the absence and in the p
resence of metal ad-atoms. For pure-metal electrodes, the maximum curr
ent density was obtained at an Au electrode. However, in the presence
of metal ad-atoms, enhancement of catalytic activity changes its order
to: Pt > Au > Pd. The three different electrodes exhibit maximum cata
lytic activity when modified with Pb ad-atoms. The decreasing order of
enhancement by ad-atoms under investigation is: Pb > Bi > Tl > Sn > C
d.