Facile Synthesis of Palladium‐Based Nanocrystals with Different Crystal Phases and a Comparison of Their Catalytic Properties

A relatively unexplored aspect of noble‐metal nanomaterials is polymorphism, or their ability to crystallize in different crystal phases. Here, a method is reported for the facile synthesis of Ru@Pd core–shell nanocrystals featuring polymorphism, with the core made of hexagonally close‐packed ( hcp) ‐Ru while the Pd shell takes either an hcp or face‐centered cubic ( fcc) phase. The polymorphism shows a dependence on the shell thickness, with...