Triangular Ag-Pd alloy nanoprisms : rational synthesis with high-efficiency for electrocatalytic oxygen reduction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

35 Scopus Citations
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Author(s)

  • Lin Xu
  • Zhimin Luo
  • Xiao Zhang
  • Hai Li
  • Can Xue

Detail(s)

Original languageEnglish
Pages (from-to)11738-11743
Journal / PublicationNanoscale
Volume6
Issue number20
Online published5 Aug 2014
Publication statusPublished - 21 Oct 2014
Externally publishedYes

Abstract

We report the generation of triangular Ag-Pd alloy nanoprisms through a rationally designed synthetic strategy based on silver nanoprisms as sacrificial templates. The galvanic replacement between Ag nanoprisms and H2PdCl4 along with co-reduction of Ag+/Pd2+ is responsible for the formation of final prismatic Ag-Pd alloy nanostructures. Significantly, these Ag-Pd alloy nanoprisms exhibited superior electrocatalytic activity for the oxygen reduction reaction (ORR) as compared with the commercial Pd/C catalyst. Such a high catalytic activity is attributed to not only the alloyed Ag-Pd composition but also the dominant {111} facets of the triangular Ag-Pd nanoprisms. This work demonstrates the rational design of bimetallic alloy nanostructures with control of selective crystal facets that are critical to achieve high catalytic activity for fuel cell systems.

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