Supported metal nanoparticle catalysts have been studied using well-defined surfaces involving vapor-deposited metals on single-crystalline surfaces, where the metal atoms nucleate and grow nanoparticles.  The energetic stability of the metal atoms in these nanoparticles has been measured as a function of particle size and support properties by metal atom adsorption calorimetry as metal clusters are grown on single crystalline oxide, carbon and other metal supports.  Their small-molecule chemisorption properties have also been measured.  We find that their surface reactivity correlates strongly with the chemical potential of the metal atoms in these nanoparticles, which depends strongly on both their particle size and their support.                                                  * Work supported by DOE-OBES Chemical Sciences Division

Supported metal nanoparticles: Measuring the chemical potential of their metal atoms and how it correlates with their surface reactivity

248th National Meeting (2014)

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