The knowledge about how CO occupies and detaches from specific surface sites on well-
structured Pt surfaces provides outstanding information on both dynamics/mobility of COads
and oxidation of this molecule under electrochemical conditions. This work reports how the
potentiostatic growth of different coverage CO adlayers evolves with time on both cubic and
octahedral Pt nanoparticles in acidic medium. Data suggest that during the growth of the CO
adlayer, COads molecules slightly shift toward low coordination sites only on octahedral Pt …