We have shown that superparamagnetic iron oxide (Fe3O4) nanoparticles with a surface functionalization of dimercaptosuccinic acid is an effective, magnetic, sorbent material for toxic metals such as Hg, Ag, Pb, Cd and other soft cations. The chemical affinity, stability, capacity and kinetics of the functionalized nanoparticles has been explored and compared to conventional resin based sorbents and nanoporous silica materials with similar surface chemistries.
Revised: January 27, 2012 |
Published: June 9, 2007
Citation
Yantasee W., C.L. Warner, T. Sangvanich, R.S. Addleman, T.G. Carter, R.J. Wiacek, and G.E. Fryxell, et al. 2007.Removal of Heavy Metals from Aqueous Systems with Thiol Functionalized Superparamagnetic Nanoparticles.Environmental Science & Technology 41, no. 14:p.5114-5119.PNNL-SA-53961.doi:10.1021/es0705238