Isolated Effects of Surface Ligand Density on the Catalytic Activity and Selectivity of Palladium Nanoparticles.

ABSTRACT: Alkanethiolate-capped palladium nanoparticles (PdNPs) have previously been synthesized by using a modified Brust-Schiffrin synthesis (using alkanethiosulfate instead of alkanethiol), in which the nanoparticle core size is established during alkanethiosulfate ligand passivation of the nanoparticle nucleation-growth initiated by borohydride reduction. Because of the dependence of core size on the amount of ligand present, surface ligand density decreases with increasing core size. Herein we present a method in which the core size is established independent of ligand addition, allowing the formation of PdNPs with similar core sizes yet different surface ligand densities. In this method, the core size is established during the temporary passivation of growing nanoparticles by borohydride and t

SUBMITTER: Vargas KM 

PROVIDER: S-EPMC8171273 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature