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Keywords:

  • cerium oxide;
  • fuel cells;
  • gold;
  • materials science;
  • surface chemistry
Thumbnail image of graphical abstract

A two-step synthesis method is used to prepare gold-on-ceria nanorods, nanocubes, and nanopolyhedra (see picture), and a strong shape-effect of CeO2 on the water–gas shift reaction activity of the catalysts is identified. Gold on the (110) facets of ceria nanorods shows the highest activity.