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Gold-promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction

Author

Listed:
  • Kurian A. Kuttiyiel

    (Brookhaven National Laboratory)

  • Kotaro Sasaki

    (Brookhaven National Laboratory)

  • Dong Su

    (Center for Functional Nanomaterials, Brookhaven National Laboratory)

  • Lijun Wu

    (Brookhaven National Laboratory)

  • Yimei Zhu

    (Brookhaven National Laboratory)

  • Radoslav R. Adzic

    (Brookhaven National Laboratory)

Abstract

Considerable efforts to make palladium and palladium alloys active catalysts and a possible replacement for platinum have had a marginal success. Here we report on a structurally ordered Au10Pd40Co50 catalyst that exhibits comparable activity to conventional platinum catalysts in both acid and alkaline media. Electron microscopic techniques demonstrate that, at elevated temperatures, palladium cobalt nanoparticles undergo an atomic structural transition from core-shell to a rare intermetallic ordered structure with twin boundaries forming stable {111}, {110} and {100} facets via addition of gold atoms. The superior stability of this catalyst compared with platinum after 10,000 potential cycles in alkaline media is attributed to the atomic structural order of PdCo nanoparticles along with protective effect of clusters of gold atoms on the surface. This strategy of making ordered palladium intermetallic alloy nanoparticles can be used in diverse heterogeneous catalysis where particle size and structural stability matter.

Suggested Citation

  • Kurian A. Kuttiyiel & Kotaro Sasaki & Dong Su & Lijun Wu & Yimei Zhu & Radoslav R. Adzic, 2014. "Gold-promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6185
    DOI: 10.1038/ncomms6185
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    Cited by:

    1. Tao Chen & Xinkai Zhang & Hangchao Wang & Chonglin Yuan & Yuxuan Zuo & Chuan Gao & Wukun Xiao & Yue Yu & Junfei Cai & Tie Luo & Yan Xiang & Dingguo Xia, 2025. "Antisite defect unleashes catalytic potential in high-entropy intermetallics for oxygen reduction reaction," Nature Communications, Nature, vol. 16(1), pages 1-11, December.

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