Adsorbate‐Induced Surface Segregation for Core–Shell Nanocatalysts
- 23 April 2009
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 48 (19), 3529-3531
- https://doi.org/10.1002/anie.200806209
Abstract
Coming to the surface: The surface composition of carbon-supported Pt3Co catalyst particles changes upon a CO-annealing treatment. Platinum atoms segregate to the particle surface so that nanoparticles with a platinum shell surrounding an alloy core are formed. This modified catalyst has a superior activity in the oxygen reduction reaction compared to both a plain platinum catalyst and the untreated alloy particles.Keywords
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