Magnetic EDTA: coupling heavy metal chelators to metal nanomagnets for rapid removal of cadmium, lead and copper from contaminated water.

  title={Magnetic EDTA: coupling heavy metal chelators to metal nanomagnets for rapid removal of cadmium, lead and copper from contaminated water.},
  author={F. Koehler and Michael Rossier and Markus Waelle and Evagelos Kimon Athanassiou and Ludwig K. Limbach and Robert N. Grass and Detlef G{\"u}nther and Wendelin Jan Stark},
  journal={Chemical communications},
Attachment of EDTA-like chelators to carbon coated metal nanomagnets results in a magnetic reagent for the rapid removal of heavy metals from solutions or contaminated water by three orders of magnitude to concentrations as low as microg L(-1). 

Fast separation of cadmium and lead ions from contaminated water using conjugates of magnetic nanoparticle-DTPA

Novel magnetic sorbent—conjugates of surface functionalized magnetic nanoparticle-chelator—has been developed for separation of heavy metal ions from aqueous systems, which offers a simple, fast,

Neocuproine-functionalized silica-coated magnetic nanoparticles for extraction of copper(II) from aqueous solution.

Neocuproine has been covalently bound to silica-coated maghemite (γ-Fe2O3) magnetic nanoparticles (MNPs) by a phenyl ether linkage to remove Cu(II) from 12 ppm aqueous solution with an extraction efficiency of up to 99% at pH 2.5.

Functional, mesoporous, superparamagnetic colloidal sorbents for efficient removal of toxic metals.

γ-Fe(2)O(3) incorporated mesoporous silica particles of 50-100 nm size have been synthesized which are functionalized with chelating agents of metal ions and have been used for high performance and selective removal of Cd, Pb, Hg and As.

Reversible magnetic mercury extraction from water

A facile and efficient way to decontaminate mercury(II) polluted water with the aid of magnetic, highly stable and recyclable carbon coated cobalt (Co/C) nanoparticles is reported. Comparing

Manganese doping of magnetic iron oxide nanoparticles: tailoring surface reactivity for a regenerable heavy metal sorbent.

The results show that following the Mn doping process there is a large increase in affinity and capacity for heavy metals (i.e., Co, Ni, Zn, As, Ag, Cd, Hg, and Tl).

Functionalized Magnetic Nanoparticles for Environmental Remediation

Water pollution by anthropogenic activities is proving to be of critical concern as the heavy metals affect aquatic organisms and can quickly disperse to large distances. This poses a risk to both

Metal (Cd, Cr, Ni, Pb) removal from environmentally relevant waters using polyvinylpyrrolidone-coated magnetite nanoparticles

Water pollution is a major global challenge given the increasing growth in industry and human population, and certain metals can be highly toxic and contribute to this significantly. In this study,

Carboxyl-functionalized nanoparticles with magnetic core and mesopore carbon shell as adsorbents for the removal of heavy metal ions from aqueous solution.

This communication demonstrates superparamagnetic nanosized particles with a magnetic core and a porous carbon shell (thickness of 11 nm), which can remove 97% of Pb(2+) ions from an acidic aqueous



Removal of heavy metals from aqueous systems with thiol functionalized superparamagnetic nanoparticles.

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

Covalently functionalized cobalt nanoparticles as a platform for magnetic separations in organic synthesis.

Carbon-coated metal nanoparticles can be covalently functionalized by diazonium chemistry and can now serve as a basis to magnetically functionalize molecules during synthesis, enabling their recovery within seconds.

Magnetic separation of polymer hybrid iron oxide nanoparticles triggered by temperature.

The water dispersion of poly-N-isopropylacrylamide hybrid nanoparticles exhibited temperature-triggered magnetic separation behaviour: if the temperature switched between below and above 32 degrees

Gas phase synthesis of fcc-cobalt nanoparticles

Air stable cobalt nanoparticles have been prepared continuously at a production rate of 30 g h−1 by a modified flame synthesis method under highly reducing conditions. Nanoparticles of 20–60 nm in

Suzuki cross-coupling reactions on the surface of carbon-coated cobalt: expanding the applicability of core-shell nano-magnets.

To develop magnetic nanomaterials applicable to organic synthesis, the Suzuki cross-coupling method was adapted to attach a range of functional groups to carbon-coated core-shell materials via

One-pot catalyst preparation: combined detemplating and Fe ion-exchange of BEA through Fenton's chemistry.

This one-pot process simplifies and speeds up considerably the preparation route and shows excellent performance on N2O decomposition compared to conventionally prepared Fe-BEA.

A selective fluoroionophore based on BODIPY-functionalized magnetic silica nanoparticles: removal of Pb2+ from human blood.

The title fluorescence receptor exhibits a high affinity and selectivity for Pb(2+) over competing metal ions in water with an overall emission change of approximately 8-fold at the emission maximum for PB(2+).

Removing lead in drinking water with activated carbon

A point-of-use (POU) granular activated carbon (GAC) fixed bed adsorber (FBA) was evaluated for reduction of soluble and insoluble lead from drinking water. Some of the factors which affect lead