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Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions

文献类型：期刊论文

作者Li, Mengxue1; Sun, Yubing2; Liu, Haibo1; Chen, Tianhu1; Hayat, Tasawar3; Alharbi, Njud S.4; Chen, Changlun2,3,4
刊名ACS SUSTAINABLE CHEMISTRY & ENGINEERING
出版日期2017-06-01
卷号5期号:6页码:5493-5502
关键词Nanomagnetite Radionuclides Xps Analysis Surface Complexation Modeling Adsorption Mechanism
DOI10.1021/acssuschemeng.7b00829
文献子类Article
英文摘要Nanomagnetite was synthesized by heating natural siderite in nitrogen conditions and was characterized using XRD, XPS, TEM, FT-IR and acid base titration. Characteristic results illustrated that the reactive site density (17.91 sites/nm(2)) of nanomagnetite was significantly higher than that of natural siderite (3.63 sites/nm(2)), whereas average pore size (14.9 nm) of nanomagnetite decreased compared to natural siderite (52.5 nm). Effects of different ambient conditions (i.e., pH, contact time, temperatures and ionic strength) on removal behaviors of Eu(III)/U(VI) on nano magnetite were conducted by batch experiments. Removal isotherms and kinetics of Eu(III)/U(VI) on nanomagnetite fitted well by models of Langniuir and pseudo-second kinetic, respectively. Additionally, the max sorption capacity of nanomagnetite with Eu(III) (11.95 mg/g) at pH = 2.5 and T = 328 K was significantly higher than sorption capacity of U(VI) (4.93 mg/g). The XPS analysis demonstrated that the surface oxygen groups of nanomagnetite played an important role in the sorption process of. Eu(III)/U(VI) via inner surface complexation. The sorption of Eu(III)/U(VI) on nanomagnetite fitted satisfactorily using surface complexation modeling with two and three inner-sphere surface complexation sites, respectively. These findings are crucial for the evaluation of radioactive nuclides at ultralow pH conditions.
WOS关键词OXIDE MAGNETIC COMPOSITES ; HIGHLY EFFICIENT SORPTION ; GRAPHENE OXIDES ; BACILLUS-SUBTILIS ; CARBON NANOTUBES ; IONIC-STRENGTH ; HUMIC-ACID ; URANIUM VI ; U(VI) ; REMOVAL
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000402950000113
资助机构National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; National Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41172048 ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029) ; 41572029)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31897]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Key Lab New Thin Film Solar Cells, POB 1126, Hefei 230031, Anhui, Peoples R China
3.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
4.King Abdulaziz Univ, Fac Sci, Dept Biol Sci, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Li, Mengxue,Sun, Yubing,Liu, Haibo,et al. Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(6):5493-5502.
APA Li, Mengxue.,Sun, Yubing.,Liu, Haibo.,Chen, Tianhu.,Hayat, Tasawar.,...&Chen, Changlun.(2017).Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(6),5493-5502.
MLA Li, Mengxue,et al."Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.6(2017):5493-5502.

入库方式： OAI收割

来源：合肥物质科学研究院

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