Synthesis and characterization of magnetic silica/iron oxide composite as a sorbent for the removal of methylene blue

被引：10
|
作者：
Panasenko, Alexander [1 ,2 ]
Pirogovskaya, Polina [1 ]
Tkachenko, Ivan [1 ]
Ivannikov, Sergey [1 ]
Arefieva, Olga [1 ,2 ]
Marchenko, Yuri [1 ]
机构：
[1] Russian Acad Sci, Inst Chem, Far Eastern Branch, 159 Stoletiya St, Vladivostok 690022, Russia
[2] Far Eastern Fed Univ, 10 Ayaks, Vladivostok 690000, Russia
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 245卷 / 245期
关键词：
Composite material; Sorbent; Silica; Iron oxides; Magnetic properties; NANOCOMPOSITE; RICE;
D O I：
10.1016/j.matchemphys.2020.122759
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on biogenic silica, a number of magnetoactive composite sorbents of Fex(O,OH)(y)/SiO2 composition with 2.4-29.8% of Fe2O3 was obtained by deposition and impregnation. The morphology and character of the distribution of nanoscale iron oxide particles in the silica matrix were studied by scanning and transmission electron microscopy. By varying the composition and methods of preparation, samples with different magnetic properties were synthesized. Acid-base properties of the surface and sorption activity with respect to the aqueous solutions of methylene blue were studied. The combination of magnetic properties, sorption capacity up to 96.5 mg/g and surface area values up to 293 m(2)/g made suitable the obtained composites to be used as adsorbents.
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页数：7
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