title: Silica coated magnetite particles for magnetic removal of Hg2+ from water.
abstract: The magnetic removal of Hg(2+) from water has been assessed using silica coated magnetite particles. The magnetite particles were first prepared by hydrolysis of FeSO(4) and their surfaces were modified with amorphous silica shells that were then functionalized with organic moieties containing terminal dithiocarbamate groups. Under the experimental conditions used, the materials reported here displayed high efficiency for Hg(2+) uptake (74%) even at contaminant levels as low as 50 μg l(-1). Therefore these eco-nanomagnets show great potential for the removal of heavy metal ions of polluted water, via magnetic separation.
authors.affiliation: Department of Chemistry, CICECO or CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Penka I
authors.initials: PI
authors.lastname: Girginova
authors.forename: Ana L
authors.initials: AL
authors.lastname: Daniel-da-Silva
authors.forename: Cláudia B
authors.initials: CB
authors.lastname: Lopes
authors.forename: Paula
authors.initials: P
authors.lastname: Figueira
authors.forename: Marta
authors.initials: M
authors.lastname: Otero
authors.forename: Vítor S
authors.initials: VS
authors.lastname: Amaral
authors.forename: Eduarda
authors.initials: E
authors.lastname: Pereira
authors.forename: Tito
authors.initials: T
authors.lastname: Trindade