To immobilize Pd catalyst, 3-aminopropyltriethoxysilane was first loaded on the surface of core/shell nanoparticles via coordination bond through hydroxyl group interaction, to achieve amino-coated Fe3O4 nanoparticles. Then, the reaction of amino groups with acryloyl chloride led to acryloxyl groups-functionalized magnetic Fe3O4 nanoparticles
