Preparation and characterization of magnetic rectorite/iron oxide nanocomposites and its application for the removal of the dyes

被引：95
作者：
Wu, Dongliang [1 ]
Zheng, Pengwu [2 ]
Chang, Peter R. [3 ]
Ma, Xiaofei [1 ]
机构：
[1] Tianjin Univ, Sch Sci, Dept Chem, Tianjin 300072, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Sch Pharm, Nanchang 330013, Jiangxi, Peoples R China
[3] Agr & Agri Food Canada, Bioprod & Bioproc Natl Sci Program, Saskatoon, SK S7N 0X2, Canada
来源：
CHEMICAL ENGINEERING JOURNAL | 2011年 / 174卷 / 01期
关键词：
Adsorption; Dye; Fe(3)O(4); Rectorite; AQUEOUS-SOLUTION; METHYLENE-BLUE; ADSORPTION; NANOPARTICLES; EQUILIBRIUM; NANOTUBES; BEHAVIOR;
D O I：
10.1016/j.cej.2011.09.029
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The superparamagnetic Fe(3)O(4) nanoparticles were synthesized on the rectorite (REC) to prepare the adsorbent of magnetic REC (REC-Fe(3)O(4)), which was explored to adsorb three dyes, namely methylene blue (MB), neutral red (NR) and methyl orange (MO). Characterization of REC-Fe(3)O(4) by Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray diffraction showed that REC was attached with clusters of Fe(3)O(4) nanoparticles. And the galleries in the REC were partially exfoliated when Fe(3)O(4) were formed on the new surface of REC. There were still some galleries, which were not exfoliated in REC-Fe(3)O(4). Magnetic properties revealed that REC-Fe(3)O(4) was superparamagnetic with a saturation magnetization (19.14 emu/g). The adsorption behavior of REC and REC-Fe(3)O(4) illustrated that it exhibited good adsorption for MB and NR, while the adsorption of MO was very little. And REC-Fe(3)O(4) was easily separated from the aqueous solution in a magnetic field. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：489 / 494
页数：6
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