Mechanism and microstructure of Eu(III) interaction with gamma-MnOOH by a combination of batch and high resolution EXAFS investigation

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	Mechanism and microstructure of Eu(III) interaction with gamma-MnOOH by a combination of batch and high resolution EXAFS investigation
	Gao Xing; Sheng GuoDong; Huang YuYing
	2013
Source Publication	SCIENCE CHINA-CHEMISTRY
ISSN	1674-7291; 1869-1870
Volume	56 Issue:11 Pages:CONCATENATE(Sheet1!I207,-Sheet1!J207)
Abstract	In this paper, the macroscopic interaction method and high resolution EXAFS technique with a bent crystal analyzer were combined to study Eu(III) interaction mechanism and microstructure with gamma-MnOOH as a function of pH. The results indicated that Eu(III) interaction with gamma-MnOOH was apparently dependent on pH but independent of ionic strength, suggesting the formation of inner-sphere surface complexation for Eu(III) onto gamma-MnOOH. Results of EXAFS analysis indicated that Eu was surrounded by similar to 9.0 O atoms in first coordination shell at R (Eu-O) a parts per thousand 2.40 , and second shell of Mn atoms at R (Eu-Mn) a parts per thousand 3.60 was observed for the three adsorption samples. These findings suggested formation of a bidentate surface complex with Eu(III) bonding by edge sharing to MnO6-octahedron on gamma-MnOOH surface. Both the macroscopic interaction data and the molecular level evidence of Eu(III) microstructure at the gamma-MnOOH-water interface should be factored into better understanding the fate and mobility of Eu(III) and related radionuclides in the natural soil and water environment.
Indexed By	SCI
Language	英语
Funding Project	应物所项目组
WOS ID	WOS:000326327500021
Citation statistics	Cited Times:11[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/13817
Collection	中科院上海应用物理研究所2011-2019年
Recommended Citation GB/T 7714	Gao Xing,Sheng GuoDong,Huang YuYing. Mechanism and microstructure of Eu(III) interaction with gamma-MnOOH by a combination of batch and high resolution EXAFS investigation[J]. SCIENCE CHINA-CHEMISTRY,2013,56(11):CONCATENATE(Sheet1!I207,-Sheet1!J207).
APA	Gao Xing,Sheng GuoDong,&Huang YuYing.(2013).Mechanism and microstructure of Eu(III) interaction with gamma-MnOOH by a combination of batch and high resolution EXAFS investigation.SCIENCE CHINA-CHEMISTRY,56(11),CONCATENATE(Sheet1!I207,-Sheet1!J207).
MLA	Gao Xing,et al."Mechanism and microstructure of Eu(III) interaction with gamma-MnOOH by a combination of batch and high resolution EXAFS investigation".SCIENCE CHINA-CHEMISTRY 56.11(2013):CONCATENATE(Sheet1!I207,-Sheet1!J207).

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