A facile strategy to synthesize three-dimensional Pd@Pt core–shell nanoflowers supported on graphene nanosheets as enhanced nanoelectrocatalysts for methanol oxidation

Here we demonstrate for the first time a water-based surfactant-free synthesis of three-dimensional porous Pd@Pt core–shell nanoflowers on graphene. The obtained Pd@Pt–graphene hybrids exhibited substantially enhanced electrocatalytic activity and stability relative to the commercial Pt/C catalyst originating from this exquisite nanoarchitecture for three-dimensional molecular accessibility and graphene–metal interaction.