Synthesis and Characterization of Sulfydryl-Functionalized Core-Shell Magnetic Fe3O4@SiO2 Nanoparticles Based on a Branched Polyethylenimine for Enhanced Removal of Heavy Metal Ions

AbstractThe end sulfydryl group functionalized Fe3O4@SiO2 (Fe3O4@SiO2-SH) nanoparticles were synthesized with 3-mercaptopropionic acid as a sensitive and efficient chemosensor for the removal of he...