Abstract
Magnetic carbon-coated cobalt nanoparticles functionalized with polyethyleneimine proved to be highly effective and selective for the detoxification of mercury ions from aqueous solutions.
Highlights
Removal of organic and inorganic waste from water has become an issue of major interest for the last few decades
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 proved to be the best material for scavenging toxic mercury at relevant concentrations for at least 6 consecutive cycles
Two mercury solutions with different concentrations were prepared (15 and 30 mg LÀ1) and the progress of extraction was monitored by ICPOES during 10 minutes, aiming at practical decontamination times in real case scenarios and to study the adsorption kinetics and estimate the maximum extraction capacity of the nanobeads
Summary
Removal of organic and inorganic waste from water has become an issue of major interest for the last few decades. Pang et al.[15] reported the synthesis of functionalised iron oxide nanoparticles which efficiently remove mercury(II) from water samples (380 mg Hg2+ extracted per mol adsorbent) but selectivity in combination with other metals or recyclability of this scavenger material was not studied.
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