Outside-in stepwise bi-functionalization of magnetic mesoporous silica incorporated with Pt nanoparticles for effective removal of hexavalent chromium

In this study, novel bi-functional Fe3O4/mesoporous silica core/shell nanoparticles (FMSNs) modified by thiol groups (SH) on their outer surfaces have been successfully synthesized through outside-in functionalization process, and then can be served as the three-dimensional porous supporting materials to complex with platinum ions in the mesoporous channels, where high-density amino groups (NH2) are grafted as the binding sites for chelating...