Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction
Guo WL(郭文路); Wang L(王琳); Li ZJ(李子杰); Zhu L(朱琳); Zhu LZ(祝刘正); Shi WQ(石伟群); Yuan LY(袁立永); Guo, WL; Nie, CM; Wang, L; Li, ZJ; Zhu, L; Zhu, LZ; Zhu, ZT; Shi, WQ; Yuan, LY
刊名SCIENCE CHINA-CHEMISTRY
2016
卷号59期号:5页码:629-636
关键词aminopropyls magnetic ordered mesoporous silica uranium sorption
DOI10.1007/s11426-016-5561-8
通讯作者袁立永
文章类型期刊论文
英文摘要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), N-2 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).
类目[WOS]Chemistry, Multidisciplinary
关键词[WOS]FE3O4-AT-SIO2 CORE ; AQUEOUS-SOLUTION ; REMOVAL ; NANOPARTICLES ; SORPTION ; SHELL ; SBA-15 ; MICROSPHERES ; PHOSPHONATE ; PERFORMANCE
语种英语
WOS记录号WOS:000375885200019
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260297
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Guo WL,Wang L,Li ZJ,et al. Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction[J]. SCIENCE CHINA-CHEMISTRY,2016,59(5):629-636.
APA 郭文路.,王琳.,李子杰.,朱琳.,祝刘正.,...&Yuan, LY.(2016).Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction.SCIENCE CHINA-CHEMISTRY,59(5),629-636.
MLA 郭文路,et al."Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction".SCIENCE CHINA-CHEMISTRY 59.5(2016):629-636.
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