Ultrasond-assisted synthesis of Fe3O4/SiO2 core/shell with enhanced adsorption capacity for diazinon removal

被引：55
|
作者：
Farmany, Abbas [2 ]
Mortazavi, Seyede Shima [1 ]
Mahdavi, Hossein [2 ]
机构：
[1] Islamic Azad Univ, Hamedan Branch, Dept Chem, Hamadan, Iran
[2] Univ Tehran, Dept Chem, Tehran, Iran
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 416卷
关键词：
Ultrasond-assisted method; Diazinon; Fe3O4/SiO2 core/shell nanocrystal; PESTICIDES REMOVAL; METHYLENE-BLUE; WASTE-WATER; NANOPARTICLES; EQUILIBRIUM; ADSORBENT; TRIETHOXYSILANE; SURFACTANT; MAGNETITE;
D O I：
10.1016/j.jmmm.2016.04.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fe3O4/SiO2 core/shell nanocrystals were synthesized by ultrasond-assisted procedure. The core/shell nanocrystals were characterized using XRD, FT-IR spectroscopy, SEM and BET. The BET analysis confirmed that iron oxide nanocrystal with the surface area of 208.0 m(2)/g can be used as an excellent adsorbent for organic and inorganic pollutants. The core/shell nanocrystal was used as an adsorbent for removal of insecticide O,O-diethyl-O[2-isopropyl-6-methylpyridimidinyl] phosphorothioate (diazinon). In continue the influence of different parameters such as pH, adsorbent dosage and shaking time on the adsorption capacity were studied. The experimental data were fitted well with the pseudo-second-order kinetic model (R-2 = 0.9706). The adsorption isotherm was described well by Langmuir isotherm. (C) 2016 Published by Elsevier B.V.
引用
收藏
页码：75 / 80
页数：6
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