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 | |
刊名 | SCIENCE CHINA-CHEMISTRY
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2013 | |
卷号 | 56期号:11页码:CONCATENATE(Sheet1!I207,-Sheet1!J207) |
ISSN号 | 1674-7291; 1869-1870 |
英文摘要 | 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. |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000326327500021 |
公开日期 | 2014-06-13 |
内容类型 | 期刊论文 |
源URL | [http://ir.sinap.ac.cn/handle/331007/13817] ![]() |
专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
推荐引用方式 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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