Synthesis and Characterization of Surfactant Stabilized Trimetallic Au-Ag-Pd Nanoparticles for Heck Coupling Reaction

Colloidal dispersions of trimetallic nanoparticles (tnp) are synthesized by chemical method and compositionally four different tnp are prepared and particle sizes are characterized by UV-vis, HRTEM and XPS measurements. The XPS studies provide proof of the mode of binding that occurs in the nanoparticle surface. The catalytic activities of tnp are tested by Heck C-C coupling reaction. The product yields and recyclability of the recovered catalysts are studied. Tnp exhibited better catalysis than mono and bimetallic nanoparticles, which may be due to electronic effects of the Au-Ag core on to the Pd shell atoms.