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Keywords:

  • Au/Pd nanocrystals;
  • concave surfaces;
  • electrocatalysts;
  • high-index facets;
  • SERS
Thumbnail image of graphical abstract

Superstar: Branched concave Au/Pd bimetallic nanocrystals (see picture) were synthesized in high yield by seed-mediated co-reduction of Au and Pd metal precursors in an aqueous solution at room temperature. The branches are concave and have high-index facets on their surfaces. These nanocrystals show superior electrocatalytic activity for the oxidation of ethanol and highly efficient SERS enhancement.