Monodisperse palladium nanoparticles supported on chemically derived graphene: highly active and reusable nanocatalysts for Suzuki--Miyaura cross-coupling reactions

Authors : Feyyaz DURAP, Önder METİN

Pages : 1247-1256

View : 28 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Addressed herein is the catalysis of monodisperse palladium nanoparticles insert ignore into journalissuearticles values(NPs); supported on chemically derived graphene insert ignore into journalissuearticles values(CDG); for the Suzuki--Miyaura cross-coupling of phenylboronic acid and various aryl halides. Monodisperse Pd NPs were synthesized by the solution phase reduction of palladiuminsert ignore into journalissuearticles values(II); acetylacetonate with morpholine borane complex in oleylamine and deposited on CDG via the liquid phase self-assembly method. Colloidal Pd NPs and CDG-Pd catalyst were characterized by TEM, XRD, SEM, and ICP-MS analyses. The CDG-Pd catalyst showed high activity in the Suzuki--Miyaura cross-couplings of different aryl halides including iodides, bromides, and even chlorides with phenylboronic acid under mild conditions. More importantly, the reusability experiments revealed that CDG-Pd catalyst was highly durable by almost maintaining its inherent activity after the 15th catalytic cycle.
Keywords : Palladium nanoparticles, graphene, heterogeneous catalyst, Suzuki Miyaura, cross couplings