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- Author(s):
- Mayrhofer, Karl J. J.; Juhart, Viktorija; Hartl, Katrin; Hanzlik, Marianne; Arenz, Matthias
- Title:
- Adsorbate-Induced Surface Segregation for Core-Shell Nanocatalysts
- Abstract:
- Coming to the surface: The surface compn. 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 redn. reaction compared to both a plain platinum catalyst and the untreated alloy particles. [on SciFinder(R)]
- Keywords:
- Adsorbed substances Annealing Controlled atmospheres Cyclic voltammetry Nanoparticles Reduction Surface composition Surface segregation (adsorbate-induced surface segregation for core-shell nanocatalysts) Electric potential (at electrode surface, indicative of surface compn. adsorbate-induced surface segregation for core-shell nanocatalysts) Catalysts (electrocatalysts adsorbate-induced surface segregation for core-shell nanocatalysts) Fuel cell cathodes (materials for adsorbate-induced surface... »
- Congress title:
- CAN 151:82233 52-2 Electrochemical, Radiational, and Thermal Energy Technology Lehrstuhl Physikalische Chemie, Technische Universitaet Muenchen, Garching, Germany. Journal 1433-7851 12052-40-3 (Platinum, compd. with cobalt (3:1)) Role: CAT (Catalyst use), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), TEM (Technical or engineered material use), PROC (Process), USES (Uses), RACT (Reactant or reagent) (adsorbate-induced surface segregation for core-shell nanocat... »
- Journal title:
- Angew. Chem., Int. Ed.
- Year:
- 2009
- Journal volume:
- 48
- Journal issue:
- 19
- Pages contribution:
- 3529-3531, S3529/1-S3529/6
- Fulltext / DOI:
- doi:10.1002/anie.200806209
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