One-pot solvothermal synthesis of Pd/Fe3O4 nanocomposite and its magnetically recyclable and efficient catalysis for Suzuki reactions

A facile solvothermal synthetic route has been successfully developed to fabricate Pd/Fe 3 O 4 nanocomposite with the assistance of polyvinylpyrrolidone (PVP) in N,N-dimethylformamide (DMF) solution. The as-prepared Pd/Fe 3 O 4 nanocomposite was composed of uniform 5   nm-sized Pd nanoparticles and Fe 3 O 4 nanocrystals with dimension of 40   nm. In this fabrication, PVP played an important role as a capping agent. The as-prepared Pd/Fe 3 O 4 nanocomposite exhibited superior catalytic performance and stability for various Suzuki coupling reactions, compared with single-component Pd nanoparticles under the same reaction conditions. More importantly, it displayed good magnetic property and could be easily separated from the reaction mixture by using a magnet and recycled for 10 times without losing its catalytic activity.