A Novel Magnetic Fe3O4/SiO2 Core-Shell Nanorods for the Removal of Arsenic

被引：45
|
作者：
Babu, C. M. [1 ]
Palanisamy, B. [1 ]
Sundaravel, B. [1 ]
Palanichamy, M. [1 ]
Murugesan, V. [1 ]
机构：
[1] Anna Univ, Dept Chem, Madras 600025, Tamil Nadu, India
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 04期
关键词：
Nanorods; Magnetite; Characterisation; Ion-Exchange; Adsorption; Arsenic Removal; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; MESOPOROUS SILICA; REVERSE-OSMOSIS; CHITOSAN BEADS; HEAVY-METALS; WATER; NANOPARTICLES; ADSORPTION; ADSORBENT;
D O I：
10.1166/jnn.2013.7376
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel magnetic Fe3O4 core-shell nanorods (MCSNs) were synthesized by crosslinking amine functionalized Fe3O4@SiO2 core-shell nanoparticles with 1,2-bromochloroethane. These nanorods were then protonated with dilute HCl. The MCSNs nanorods were characterized using FT-IR, N-2 adsorption, VSM, SEM and TEM. The surface area of MCSNs nanorods was found to be 335 m(2)/g, which is higher than bare iron oxide and amine functionalized Fe3O4@SiO2. These nanorods were used simultaneously as ion-exchanger and adsorbent for the removal of arsenic from aqueous solution. It exhibited high adsorption capacity for arsenic. The kinetic study revealed that adsorption equilibrium attained within five min. The adsorbed arsenic on the nanorods were removed by magnetic separation and regenerated by acid treatment. The percentage removal of arsenic was more than 99%. Such nanorods can be used to remove not only arsenic but also other anions from potable water.
引用
收藏
页码：2517 / 2527
页数：11
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