Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction
| العنوان: | Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction |
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| المؤلفون: | Zijie Li, Zhentai Zhu, Wen-Lu Guo, Liu-zheng Zhu, Li-Yong Yuan, Wei-Qun Shi, Lin Zhu, Chang-Ming Nie, Lin Wang |
| المصدر: | Science China Chemistry. 59:629-636 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Thermogravimetric analysis, Sorbent, Materials science, Inorganic chemistry, Sorption, 02 engineering and technology, General Chemistry, Mesoporous silica, 021001 nanoscience & nanotechnology, 010403 inorganic & nuclear chemistry, 01 natural sciences, 0104 chemical sciences, Adsorption, Desorption, Fourier transform infrared spectroscopy, 0210 nano-technology, Mesoporous material |
| الوصف: | Functionalized magnetic Fe3O4@SiO2 composite nanoparticles were prepared by simply embedding iron oxide nanoparticles into MCM-41 through one-step synthesis process, followed by aminopropyls grafting on the mesopore channels, aiming to efficiently and conveniently uptake U(VI) from aqueous solution. The resultant material possesses highly ordered mesoporous structure with large surface area, uniform pore size, excellent thermal stability, quick magnetic response, and desirable acids resistance, confirmed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), N2 adsorption/ desorption experiments, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). Detailed U(VI) sorption test indicated that this material is indeed an effective U(VI) sorbent with fast sorption kinetics of less than 2 h, large sorption capacity of 160 mg/g at pH 5.0±0.1, and desirable selectivity towards U(VI) ions over a range of competing metal ions. The absorbed U(VI) can be easily desorbed by 0.01 mol/L or more concentrated HNO3 solution, and the reclaimed sorbent can be reused with no obvious decrease of sorption capacity even after 4 sorption-desorption cycles. The present results suggest the vast opportunities of this kind of magnetic composite on the solid-phase extraction of U(VI). |
| تدمد: | 1869-1870 1674-7291 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ed003dc0c037664dd5d9aa1bead2c590 https://doi.org/10.1007/s11426-016-5561-8 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........ed003dc0c037664dd5d9aa1bead2c590 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18691870 16747291 |
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