Three-Dimensional Branched and Faceted Gold–Ruthenium Nanoparticles: Using Nanostructure to Improve Stability in Oxygen Evolution Electrocatalysis

Lucy Gloag, Tania M. Benedetti, Soshan Cheong, Yibing Li, Xuan Hao Chan, Lise Marie Lacroix, Lan-Yun Chang, Raul Arenal, Ileana Florea, Hector Barron, Amanda S. Barnard, Anna M. Henning, Chuan Zhao, Wolfgang Schuhmann, J. Justin Gooding, Richard D. Tilley

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Achieving stability with highly active Ru nanoparticles for electrocatalysis is a major challenge for the oxygen evolution reaction. As improved stability of Ru catalysts has been shown for bulk surfaces with low-index facets, there is an opportunity to incorporate these stable facets into Ru nanoparticles. Now, a new solution synthesis is presented in which hexagonal close-packed structured Ru is grown on Au to form nanoparticles with 3D branches. Exposing low-index facets on these 3D branches creates stable reaction kinetics to achieve high activity and the highest stability observed for Ru nanoparticle oxygen evolution reaction catalysts. These design principles provide a synthetic strategy to achieve stable and active electrocatalysts.

Original languageEnglish (US)
Pages (from-to)10241-10245
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number32
DOIs
StatePublished - Aug 6 2018

Keywords

  • bimetallic nanoparticles
  • electrocatalysis
  • nanocrystals
  • oxygen evolution
  • ruthenium

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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