One-Pot Synthesis of Monodisperse Palladium Tin Nanoparticles with Controlled Composition and Size and Its Catalytic Ability Study

Abstract

We have developed a novel one-pot synthetic procedure for monodisperse palladium tin bimetallic alloy nanoparticles (NPs) with tunable compositions and sizes by the co-reduction of tin(II) acetate and palladium(II) bromide in the presence of oleylamine and trioctylphosphine. These NPs loaded on active carbon (PdSn/C) were used as active catalysts for Heck reactions, and exhibited composition dependent catalytic activities. Among these nanocatalysts, Pd63Sn37 NPs showed the best catalytic performance which is even superior to pure Pd NPs. PdSn NPs with controlled compositions and sizes were synthesized and characterized systematically, and Pd63Sn37/C NPs showed the best catalytic ability and stability that is even superior to pure Pd NPs with higher catalytic activity and stability in multi-recycled Heck reactions.