Influence of adsorbed carbon monoxide on electrocatalytic oxidation of simple organic molecules at platinum and palladium electrodes in acidic solution: a survey using real-time FTIR spectroscopy

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

“…The CO 2 formation (red circle at 2345 cm -1 ) is visible only at 0.9 V implying that at this potential isopropanol can be totally oxidized, however, this high potential is not relevant for a DAFC anode implying that acetone is the only product of isopropanol oxidation in acidic DAFC with Pt electrode. Though, the most interesting observation is that no linearly or bridge bonded CO is observed at any potential as has been reported also by other groups [78,99,100].…”

Effect of Mass Transport on the Electrochemical Oxidation of Alcohols Over Electrodeposited Film and Carbon-Supported Pt Electrodes

“…All potentials are referenced with respect to Ag/AgCl-3 M NaCl unless specified otherwise. N 2 gas was purged through the electrolyte solution for [15][16][17][18][19][20] ) and A is the geometric area of the glassy carbon electrode (0.1963 cm 2 ) ( Table 1). The morphology of the electrodeposited Pt has been described previously [5] where a 'cauliflower-like' spherical morphology was observed.…”

“…Pt is known as the most active single metal catalyst for alcohol oxidation reaction in acidic media and has been studied extensively for methanol [6][7][8][9][10], ethanol [11][12][13] and butanol isomers [4,5,[14][15][16]. The intermediates formed during the oxidation of the alcohol molecules on the Pt surfaces have been identified using various electrochemical and spectroscopic techniques such as in-situ FT-IR [17,18] and online differential electrochemical mass spectroscopy (DEMS) [18][19][20][21][22][23]. Based on these studies, a dual path reaction mechanism (Scheme 1) has been proposed and well documented for small chain alcohol molecules [24].…”

Weakening the C C bond: On the behavior of glyoxylic acid on Pt(111) and its vicinal surfaces

“…Several studies have been carried out on the electrochemistry of glyoxylic acid (GA) on polycrystalline surfaces of different electrode materials such as vitreous carbon 6 , gold 7 ,palladium 8 and platinum [9][10][11] . The effect of the crystallographic orientation is fundamental from an electrocatalytic point of view, and although GA oxidation was found to be structure sensitive on Pt 11 , in situ studies about GA adsorption and reactivity at well-defined metal/solution interfaces are rather scarce 7,11 .…”