Fernandes, S. and Eichenseer, C. M. and Kreitmeier, P. and Rewitzer, J. and Zlateski, V. and Grass, R. N. and Stark, W. J. and Reiser, O. (2015) Reversible magnetic mercury extraction from water. RSC ADVANCES, 5 (58). pp. 46430-46436. ISSN 2046-2069,
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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 non-functionalised Co/C nanomagnets with particles that were functionalised with amino moieties, the latter one proved to be more effective for scavenging mercury with respect to extraction capacity and recyclability. A novel nanoparticle-poly(ethyleneimine) hybrid (Co/C-PEI) prepared by direct ring opening polymerization of aziridine initiated by an amine functionalised nanoparticle surface led to a high capacity material (10 mmol amino groups per g nanomaterial) and thus proved to be the best material for scavenging toxic mercury at relevant concentrations (mg L-1/mu g L-1) for at least 6 consecutive cycles. On a large-scale, 20 L of drinking water with an initial Hg2+ concentration of 30 mg L-1 can be decontaminated to the level acceptable for drinking water (<= 2 mg L-1) with just 60 mg of Co/C-PEI particles.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL EMISSION-SPECTROMETRY; EFFICIENT REMOVAL; AQUEOUS-SOLUTIONS; CARBON NANOTUBES; METAL-IONS; NANOPARTICLES; SAMPLES; PRECONCENTRATION; DENDRIMERS; REAGENTS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis) Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 31 Jul 2019 08:27 |
| Last Modified: | 31 Jul 2019 08:27 |
| URI: | https://pred.uni-regensburg.de/id/eprint/6241 |
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