Oxygen Electroreduction Catalyzed by Gold Nanoclusters: Strong Core Size Effects
- 26 May 2009
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 48 (24), 4386-4389
- https://doi.org/10.1002/anie.200901185
Abstract
Bigger isn't better: Gold nanoclusters exhibit enhanced electrocatalytic activity in oxygen reduction when the core size decreased from Au140 to Au11, as reflected by the onset potential Eonset and peak current density JK (see picture). The increasing fraction of surface atoms with low coordination numbers and the shift of the d-band center to the Fermi level facilitate oxygen adsorption.Keywords
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