Effects of composition on catalytic activities of molybdenum doped platinum nanoparticles.

ABSTRACT: The physical and chemical properties of bimetallic nanoparticles can be optimized by tuning the particle composition. In this study, we identified CO adsorption and dissociation energetics on five Pt-Mo nanoparticles at different concentrations, the lowest energy Pt₇, Pt₆Mo, Pt₅Mo₂, Pt₄Mo₃, and Mo₇ clusters. We have shown that the CO adsorption and dissociation energies and preferred CO adsorption sites are largely dependent on the composition of the nanoparticles. As the Mo concentration increases, the strength of the C-O internal bond in the adsorption complex decreases, as indicated by a decrease in the C-O stretching frequency. Also, more Mo sites in the nanoparticle become available for CO adsorption, and the

SUBMITTER: SUmer A 

PROVIDER: S-EPMC7751935 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature