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

doi:10.1021/acssuschemeng.7b00829

	Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions
	Li, Mengxue 1; Sun, Yubing 2; Liu, Haibo 1; Chen, Tianhu 1; Hayat, Tasawar 3; Alharbi, Njud S.4; Chen, Changlun 2,3,4
	2017-06-01
发表期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
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.
文章类型	Article
关键词	Nanomagnetite Radionuclides Xps Analysis Surface Complexation Modeling Adsorption Mechanism
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1021/acssuschemeng.7b00829
关键词[WOS]	OXIDE MAGNETIC COMPOSITES ; HIGHLY EFFICIENT SORPTION ; GRAPHENE OXIDES ; BACILLUS-SUBTILIS ; CARBON NANOTUBES ; IONIC-STRENGTH ; HUMIC-ACID ; URANIUM VI ; U(VI) ; REMOVAL
收录类别	SCI
语种	英语
项目资助者	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)
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Multidisciplinary ; Engineering, Chemical
WOS记录号	WOS:000402950000113
引用统计	被引频次：69[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/31897
专题	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.

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