User: Guest  Login
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: