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Succinamic Acid Grafted Nanosilica for the Preconcentration of U(VI) from Aqueous Solution

文献类型：期刊论文

作者Fan, Fuyou1,2,3; Pan, Duoqiang1,4; Wu, Hanyu1,4; Zhang, Tianjiao5; Wu, Wangsuo1,4
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2017-03-01
卷号56页码:2221-2228
ISSN号0888-5885
DOI10.1021/acs.iecr.6b04652
英文摘要Succinamic acid-functionalized nanosilica (SA@SiO2) was synthesized, characterized, and tested for hexavalent uranium preconcentration from contaminated aqueous solutions. The succinamic acid grafted nanosilica exhibited improved uranium preconcentration capacity in comparison with that of raw nanosilica. The effects of environmental conditions such as pH, ionic strength, solid concentration, foreign ions, and temperature on uranium(VI) preconcentration performance were investigated by batch technique in detail, and the related mechanism is discussed with the aid of X-ray photoelectron spectroscopy. Results showed that U(VI) preconcentration by SA@SiO2 was strongly dependent on pH while less dependent on ionic strength; the preconcentration was mainly dominated by inner-sphere surface complexation. The coexisting cations had no effects, while anions influenced U(VI) preconcentration significantly. The preconcentration of U(VI) was favorable at lower temperatures; the maximum preconcentration capacity was 44.5 mg/g at pH 4.0 +/- 0.1 and T = 298 K. Thermodynamic parameters indicated that the preconcentration process was exothermic and spontaneous. The SA@SiO2 exhibited desirable selectivity for uranium and can be reused at least five times without decreasing capacity. Accordingly, the SA@SiO2 is a potential and suitable candidate for the preconcentration of U(VI) from a considerable volume of contaminated water.
WOS关键词IONIC-STRENGTH ; FUNCTIONALIZED SBA-15 ; MESOPOROUS SILICA ; SORPTION ; URANIUM ; REMOVAL ; ADSORPTION ; ADSORBENTS ; PH ; TEMPERATURE
资助项目National Natural Science Foundation of China[21327801] ; National Natural Science Foundation of China[41573128] ; National Natural Science Foundation of China[21601179] ; Key Laboratory Project of Gansu Province[1309RTSA041] ; "100-Talent" Program of the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources ; Institute of Geology and Geophysics ; Fundamental Research Funds for the Central University[lzujbky-2015-70] ; Fundamental Research Funds for the Central University[lzujbky-2016-34] ; open project of the Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University[lzummm2015011]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000395493600031
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; Key Laboratory Project of Gansu Province ; "100-Talent" Program of the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources ; Institute of Geology and Geophysics ; Fundamental Research Funds for the Central University ; open project of the Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University
源URL[http://119.78.100.186/handle/113462/44555]  
专题中国科学院近代物理研究所
通讯作者Pan, Duoqiang; Wu, Wangsuo
作者单位1.Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Minist Educ, Key Lab Special Funct Mat & Struct Design, Lanzhou 730000, Peoples R China
5.Lanzhou Univ, Med Coll 2, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Fan, Fuyou,Pan, Duoqiang,Wu, Hanyu,et al. Succinamic Acid Grafted Nanosilica for the Preconcentration of U(VI) from Aqueous Solution[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2017,56:2221-2228.
APA Fan, Fuyou,Pan, Duoqiang,Wu, Hanyu,Zhang, Tianjiao,&Wu, Wangsuo.(2017).Succinamic Acid Grafted Nanosilica for the Preconcentration of U(VI) from Aqueous Solution.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,56,2221-2228.
MLA Fan, Fuyou,et al."Succinamic Acid Grafted Nanosilica for the Preconcentration of U(VI) from Aqueous Solution".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 56(2017):2221-2228.

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来源：近代物理研究所

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