Affiliation:
1. School of Physics and Electronic Engineering, Leshan Normal University, Leshan, Sichuan, China
Abstract
The 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 heavy metal ions, in which branched
polyethylenimine was used to provide numerous sites for the modification with 3-mercaptopropionic acid in order to increase the amount of sulfydryl group on the Fe3O4@SiO2 surface. The magnetic Fe3O4@SiO2-SH nanoparticles displayed
the maximum adsorption efficiency for Pb2+ (257.1 mg/g) at room temperature without pH pre-adjustments. Moreover, Fe3O4@SiO2-SH nanoparticles also had desirable capturing abilities towards Cu2+ (90.3%), Hg2+ (89.8%),
Ag+ (84.1%) and Cd2+ (78.6%) when their initial concentrations were 200 mg/L.
Subject
Materials Chemistry,Electrical and Electronic Engineering,Condensed Matter Physics,Ceramics and Composites,Control and Systems Engineering,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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