Gas surface Interactions with Nanocatalysts: Particle Size Effects in the Adsorption Dynamics of CO on Supported Gold Cluster

We present evidence that adsorption probabilities (gas-surface adsorption dynamics) of CO depend distinctly on the Au cluster size, with a reactivity maximum at {approx}3 nm. This cluster size is consistent with the legendary reactivity enhancement seen for the CO-oxidation reaction. Electron beam l...

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Bibliographic Details
Published in:	Chemical physics letters Vol. 483; no. 4-6
Main Authors:	Kadossov, E., Lu, M., Justin, J., Rosenmann, D., Ocola, L.E., Cabrini, S., Burghaus, U.
Format:	Journal Article
Language:	English
Published:	United States 01-12-2009
Subjects:	ADSORPTION Auger electron spectroscopy catalysts ELECTRON BEAMS functional nanomaterials GOLD nanoclusters thermal desorption spectroscopy NANOSCIENCE AND NANOTECHNOLOGY PARTICLE SIZE PHYSICAL VAPOR DEPOSITION
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Summary:	We present evidence that adsorption probabilities (gas-surface adsorption dynamics) of CO depend distinctly on the Au cluster size, with a reactivity maximum at {approx}3 nm. This cluster size is consistent with the legendary reactivity enhancement seen for the CO-oxidation reaction. Electron beam lithography has been used to fabricate some of the samples (down to 12 nm) as well as physical vapor deposition.
Bibliography:	DE-AC02-98CH10886 USDOE SC OFFICE OF SCIENCE (SC) BNL-91032-2010-JA
ISSN:	0009-2614 1873-4448
DOI:	10.1016/j.cplett.2009.10.083