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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
2016
Source PublicationSCIENCE CHINA-CHEMISTRY
ISSN1674-7291
EISSN1869-1870
Volume59Issue:5Pages:629-636
Corresponding Author袁立永
SubtypeArticle
AbstractFunctionalized 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).
Keywordaminopropyls magnetic ordered mesoporous silica uranium sorption
DOI10.1007/s11426-016-5561-8
WOS KeywordFE3O4-AT-SIO2 CORE ; AQUEOUS-SOLUTION ; REMOVAL ; NANOPARTICLES ; SORPTION ; SHELL ; SBA-15 ; MICROSPHERES ; PHOSPHONATE ; PERFORMANCE
Indexed BySCI
Language英语
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000375885200019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/260297
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
Recommended Citation
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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