Continuous-Flow and Scalable Synthesis of Pd@Pt_nL Core-Shell Nanocrystals with Enhanced Activity toward Oxygen Reduction.

ABSTRACT: We report a scalable method based on continuous-flow reactors for conformally coating the surfaces of facet-controlled Pd nanocrystals with uniform, ultrathin shells made of Pt. The key to the success of such an approach is the identification of a proper polyol to generate the Pt atoms at a relatively slow rate to ensure adequate surface diffusion and thus the formation of uniform shells in a layer-by-layer fashion. We first demonstrate the concept using the production of Pd@Pt_nL (n = 2-5) core-shell icosahedral nanocrystals and then have the strategy successfully extended to the syntheses of Pd@Pt_nL cubic and octahedral nanocrystals. All these core-shell nanocrystals showed great enhancement in catalytic activity toward the oxygen reduction reaction. Our results sugg

SUBMITTER: Wang H 

PROVIDER: S-EPMC11664583 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature