Kinetic diffusion-controlled synthesis of twinned intermetallic nanocrystals for CO-resistant catalysis.

ABSTRACT: Intermetallic catalysts are of immense interest, but how heterometals diffuse and related interface structure remain unclear when there exists a strong metal-support interaction. Here, we developed a kinetic diffusion-controlled method and synthesized intermetallic Pt₂Mo nanocrystals with twin boundaries on mesoporous carbon (Pt₂Mo/C). The formation of small-sized twinned intermetallic nanocrystals is associated with the strong Mo-C interaction-induced slow Mo diffusion and the heterogeneity of alloying, which is revealed by an in situ aberration-corrected transmission electron microscope (TEM) at high temperature. The twinned Pt₂Mo/C constitutes a promising CO-resistant catalyst for highly selective hydrogenation of nitroarenes. Theoretical calculations an

SUBMITTER: Wang K 

PROVIDER: S-EPMC9217091 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature