Removal of Heavy Metals from Aqueous Systems with Thiol Functionalized Superparamagnetic Nanoparticles
Chulalongkorn University · University of Oregon · +1 more institution
Abstract
We have shown that superparamagnetic iron oxide (Fe3O4) nanoparticles with a surface functionalization of dimercaptosuccinic acid (DMSA) are an effective sorbent material for toxic soft metals such as Hg, Ag, Pb, Cd, and Tl, which effectively bind to the DMSA ligands and for As, which binds to the iron oxide lattices. The nanoparticles are highly dispersible and stable in solutions, have a large surface area (114 m2/g), and have a high functional group content (1.8 mmol thiols/g). They are attracted to a magnetic field and can be separated from solution within a minute with a 1.2 T magnet. The chemical affinity, capacity, kinetics, and stability of the magnetic nanoparticles were compared to those of…
Citation impact
- FWCI
- 15.53
- Percentile
- 100%
- References
- 35
Authors
9- WYWassana YantaseeCorresponding
Chulalongkorn University, University of Oregon, Pacific Northwest National Laboratory
- CLCynthia L. Warner
Chulalongkorn University, Pacific Northwest National Laboratory, University of Oregon
- TSThanapon Sangvanich
University of Oregon, Chulalongkorn University, Pacific Northwest National Laboratory
- RSR. Shane Addleman
Pacific Northwest National Laboratory, Chulalongkorn University, University of Oregon
- TGTimothy G. Carter
Chulalongkorn University, University of Oregon, Pacific Northwest National Laboratory
Topics & keywords
- Chemistry
- Surface modification
- Aqueous solution
- Superparamagnetism
- Nanoparticle
- Sorbent
- Nuclear chemistry
- Magnetic nanoparticles
- Life below water