Trends in the Binding Strength of Surface Species on Nanoparticles: How Does the Adsorption Energy Scale with the Particle Size?

Trends in the Binding Strength of Surface Species on Nanoparticles: How Does the Adsorption Energy Scale with the Particle Size?

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O binding strength due to a change of the local configuration of...

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Veröffentlicht in:Angewandte Chemie International Edition 2013-05, Vol.52 (19), p.5175-5179
Hauptverfasser: Peter, Matthias, Flores Camacho, Jose Manuel, Adamovski, Serguey, Ono, Luis K., Dostert, Karl-Heinz, O'Brien, Casey P., Roldan Cuenya, Beatriz, Schauermann, Swetlana, Freund, Hans-Joachim
Format: Artikel
Sprache:eng
Schlagworte:
Adsorption
adsorption calorimetry
Binding energy
binding strength
Bonding strength
metal nanoparticles
Nanoparticles
oxygen
Palladium
Particle size
Strength
Substrates
Surface chemistry
Trends
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Zusammenfassung: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O binding strength due to a change of the local configuration of the adsorption site and a strong decrease of the PdO bonding due to the reduction of the cluster size.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201209476