One-pot synthesis of superparamagnetically modified zeolite chabazite for removal of Cs+ from radioactively contaminated water

被引:2
|
作者
Ito, Azusa [1 ,2 ]
Karmaoui, Mohamed [1 ,3 ]
Thirunavukkarasu, Gnanavel [4 ]
Hriljac, Joseph A. [1 ,5 ]
机构
[1] Univ Birmingham, Sch Chem, Birmingham B15 2TT, England
[2] Waste Management Tech Dev Grp, Waste Management Div, Japan Atom Energy Agcy, CLADS, Tokai, Japan
[3] Univ Sci & Technol Oran, Fac Chem, POB 1505, Oran 31000, Algeria
[4] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, England
[5] Harwell Sci & Innovat Campus, Diamond Light Source Ltd, Didcot OX11 0DE, England
基金
英国工程与自然科学研究理事会;
关键词
COMPOSITE; EXTRACTION; ION;
D O I
10.1063/5.0139282
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Composites of sodium-exchanged zeolite chabazite particles with attached superparamagnetic nanoparticles of Fe3O4 and CoFe2O4 ferrite spinels have been produced using a novel solvothermal route. These have been characterized by a combination of techniques, including powder x-ray diffraction, x-ray fluorescence spectroscopy, vibrating sample magnetometry, and both scanning and transmission electron microscopy. These confirm the nature of the attached nanoparticles, and the microscope images show a good dispersion of nanoparticles with a narrow size range deposited uniformly on the surface of the zeolite particles. The magnetization is of sufficient strength to allow magnetic separation from a solution. Both time and pH dependent Cs uptake experiments show that the magnetized systems are still excellent for the rapid uptake of Cs via an ion exchange process with no reduction in property due to the attached nanoparticles.
引用
收藏
页数:9
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