کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5411080 | 1506564 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of Fe3O4@cyclodextrin magnetic composite for the high-efficient removal of Eu(III)
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fabrication of Fe3O4@cyclodextrin magnetic composite for the high-efficient removal of Eu(III) Fabrication of Fe3O4@cyclodextrin magnetic composite for the high-efficient removal of Eu(III)](/preview/png/5411080.png)
چکیده انگلیسی
In this study, the Fe3O4@CD MCs were synthesized by using a simple chemical co-precipitation method for the removal of Eu(III) from aqueous solutions. Compared with Fe3O4, the prepared Fe3O4@CD MCs exhibited higher sorption amount toward Eu(III). In addition, Fe3O4@CD MCs could be easily separated from aqueous solutions by using magnetic separation technique at low magnetic field gradients. The sorption properties of Fe3O4@CD MCs toward Eu(III) were investigated by using a batch technique under environmental conditions. The sorption kinetics of Eu(III) on Fe3O4@CD MCs could achieve equilibrium in a time period of 3Â h. The pH-dependent and ionic strength-independent Eu(III) sorption on the surface of Fe3O4@CD MCs demonstrated that the sorption mechanism of Eu(III) was inner-sphere surface complexation at low pH, whereas the removal of Eu(III) was achieved by simultaneous precipitation and inner-sphere surface complexation at high pH values. The Langmuir and Freundlich patterns were employed to simulate sorption isotherms of Eu(III) on Fe3O4@CD MCs. Considering the low cost, simple synthesis procedure, high removal efficiency, easy separation and environmental friendliness, it is expected that Fe3O4@CD MCs can be used as a cost-effective material for the purification of Eu(III)-bearing effluents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 206, June 2015, Pages 272-277
Journal: Journal of Molecular Liquids - Volume 206, June 2015, Pages 272-277
نویسندگان
Zhiqiang Guo, Yuan Li, Shuhao Pan, Jinzhang Xu,