Nikbin, N;
Austin, N;
Vlachos, DG;
Stamatakis, M;
Mpourmpakis, G;
(2015)
Catalysis at the sub-nanoscale: complex CO oxidation chemistry on a few Au atoms.
Catalysis Science & Technology
, 2015
(1)
pp. 134-141.
10.1039/C4CY01295J.
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Abstract
Au has been widely used as jewelry since ancient times due to its bulk, chemically inert properties. During the last three decades, nanoscale Au has attracted remarkable attention and has been shown to be an exceptional catalyst, especially for oxidation reactions. Herein, we elucidate a puzzle in catalysis by using multiscale computational modeling: the experimentally observed “magic number” CO oxidation catalytic behavior of sub-nanoscale Au clusters. Our results demonstrate that support effects (cluster charging), symmetry-induced electronic effects on the clusters, catalyst reconstruction, competing chemical pathways and formation of carbonate contribute to the marked differences in the observed catalytic behavior of Aun− clusters with n = 6, 8 and 10 atoms. This is the first demonstration of multiscale simulations on sub-nanoscale catalysts unraveling the magic number activity for the CO oxidation reaction on Au.
| Type: | Article |
|---|---|
| Title: | Catalysis at the sub-nanoscale: complex CO oxidation chemistry on a few Au atoms |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/C4CY01295J |
| Publisher version: | http://dx.doi.org/10.1039/C4CY01295J |
| Language: | English |
| Additional information: | This journal is © The Royal Society of Chemistry 2015 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1457397 |
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