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キーワード:
adsorption calorimetry;
binding strength;
metal nanoparticles;
oxygen;
palladium
要旨:
Thumbnail image of graphical abstract
The binding energy of oxygen on Pd nanoparticles was measured by a direct calorimetric method as a function of the particle size. The reduced dimensionality of the Pd substrate results in two counteracting trends: an increase of the Pd[BOND]O binding strength due to a change of the local configuration of the adsorption site and a strong decrease of the Pd[BOND]O bonding due to the reduction of the cluster size.