Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations

doi:10.1016/j.cej.2016.10.122

	Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations
	Sun, Yubing 1,2; Wang, Xiangxue 1; Ai, Yuejie 1; Yu, Zhimin 3; Huang, Wei1 ; Chen, Changlun 2; Hayat, Tasawar 4; Alsaedi, Ahmed 4; Wang, Xiangke 1,3,4
	2017-02-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
摘要	The interaction mechanism of high effective enrichment of U(VI) on sulfonated graphene oxide (GO) at ultralow pH still remains unclear. The batch characteristic results showed that sulfonated GO presented a variety of functional groups such as hydroxyl (-OH), carboxyl (-COOH) and sulfonyl (-OSO3H) groups. The macroscopic results indicated that the sorption of U(VI) on sulfonated GO was independent of ionic strength, and the maximum sorption capacity calculated from Langmuir model was 45.05 mg/g at pH 2.0. The change of relative intensities for S 2p spectra was significantly higher than that of O 1s spectra by XPS analysis. According to EXAFS analysis, the significant splitting of equatorial oxygen (U-O-eq) shell at pH 2.0 was attributed to the electron scattering of the elemental sulfur. The energy of uranyl-sulfonyl (-3198.511 hartree/particle) at pH 2.0 calculated based on theoretical calculations was lower than that of uranyl-carboxyl (-3198.498 hartree/particle), indicating that uranyl-sulfonyl was more stable at ultra low pH. These observations indicated that the sulfonyl of GO was responsible for high effective removal of U(VI) at ultralow pH, which is vital to the application of functionalized GO in the preconcentration of U (VI) in nuclear waste management and the removal of U(VI) from wastewater at low pH values. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Sulfonated Graphene Oxide u(Vi) Interaction Mechanism Dft Calculation
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.cej.2016.10.122
关键词[WOS]	DENSITY-FUNCTIONAL THERMOCHEMISTRY ; NANOSCALE ZEROVALENT IRON ; EXFOLIATED GRAPHITE OXIDE ; MODELING TECHNIQUES ; AQUEOUS-SOLUTIONS ; SULFATED GRAPHENE ; URANYL ADSORPTION ; BACILLUS-SUBTILIS ; EXAFS TECHNIQUES ; DOPED GRAPHENE
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; National Natural Science Foundation of China(41273134 ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; 2147713 ; 2147713 ; 2147713 ; 2147713 ; 2147713 ; 2147713 ; 2147713 ; 2147713 ; 391326202 ; 391326202 ; 391326202 ; 391326202 ; 391326202 ; 391326202 ; 391326202 ; 391326202 ; 21225730 ; 21225730 ; 21225730 ; 21225730 ; 21225730 ; 21225730 ; 21225730 ; 21225730 ; 21677146) ; 21677146) ; 21677146) ; 21677146) ; 21677146) ; 21677146) ; 21677146) ; 21677146)
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000390081500027
引用统计	被引频次：129[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/334002/30266
专题	中科院等离子体物理研究所
作者单位	1.North China Elect Power Univ, Sch Environm & Chem Engn, Beijing 102206, 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.Hefei Univ, Dept Biol & Environm Engn, Hefei 230000, Peoples R China 4.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
第一作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Sun, Yubing,Wang, Xiangxue,Ai, Yuejie,et al. Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations[J]. CHEMICAL ENGINEERING JOURNAL,2017,310(无):292-299.
APA	Sun, Yubing.,Wang, Xiangxue.,Ai, Yuejie.,Yu, Zhimin.,Huang, Wei.,...&Wang, Xiangke.(2017).Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations.CHEMICAL ENGINEERING JOURNAL,310(无),292-299.
MLA	Sun, Yubing,et al."Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations".CHEMICAL ENGINEERING JOURNAL 310.无(2017):292-299.

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