Silica coated magnetite particles for magnetic removal of Hg2+ from water

被引：310

作者：

Girginova, Penka I. ^{[1
]}

Daniel-da-Silva, Ana L. ^{[1
]}

Lopes, Claudia B. ^{[1
]}

Figueira, Paula ^{[1
]}

Otero, Marta ^{[1
]}

Amaral, Vitor S. ^{[2
]}

Pereira, Eduarda ^{[1
]}

Trindade, Tito ^{[1
]}

机构：

[1] Univ Aveiro, Dept Chem, CICECO, CESAM, P-3810193 Aveiro, Portugal

[2] Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 345卷 / 02期

关键词：

Mercury; Magnetite particles; Dithiocarbamate; Silica surfaces; Water purification; SOLID-PHASE EXTRACTION; IMMOBILIZED-DITHIOCARBAMATE DERIVATIVES; PLASMA-MASS SPECTROMETRY; AQUEOUS-SOLUTIONS; HEAVY-METALS; WASTE-WATER; ENVIRONMENTAL APPLICATIONS; TITANOSILICATE ETS-4; SURFACE MODIFICATION; NATURAL-WATERS;

D O I：

10.1016/j.jcis.2010.01.087

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetic removal of Hg2+ from water has been assessed using silica coated magnetite particles. The magnetite particles were first prepared by hydrolysis of FeSO4 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 Hg2+ uptake (74%) even at contaminant levels as low as 50 mu g l(-1). Therefore these eco-nanomagnets show great potential for the removal of heavy metal ions of polluted water, via magnetic separation. (c) 2010 Elsevier Inc. All rights reserved.

引用

页码：234 / 240

页数：7

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