Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations
文献类型：期刊论文
| 作者 | Ren, Peng; Wang, Cong-Zhi; Tao, Wu-Qing; Yang, Xiao-Fan; Yang, Su-Liang; Yuan, Li-Yong; Chai, Zhi-Fang; Shi, Wei-Qun |
| 刊名 | INORGANIC CHEMISTRY
 |
| 出版日期 | 2020 |
| 卷号 | 59期号:19页码:14218-14228 |
| 关键词 | TRIVALENT F-ELEMENTS HIGHLY EFFICIENT SEPARATION IONIC LIQUID EXTRACTION NITRIC-ACID SOLUTION DIGLYCOLAMIDE TODGA ELECTRIC-FIELD COMPLEXATION AGGREGATION ACTINIDES CATIONS |
| DOI | 10.1021/acs.inorgchem.0c02011 |
| 英文摘要 | Diglycolamide-based ligands have recently received increased attention due to their outstanding affinity for trivalent actinides and lanthanides. The structure optimization of the ligands, however, still remains a hot topic to achieve better extraction performance. In this work, we prepare and investigate three multidentate diglycolamide ligands for the selective separation of Eu(III) over Am(III) from a nitric acid solution to explore the effect on the extraction of alkyl groups on the nitrogen atoms in the center of the BisDGA ligands. The introduction of ethyl or isopropyl groups on the central nitrogen atoms greatly increased the distribution ratios of trivalent metal ions and enhanced the separation factor of Eu(III) over Am(III). The complexation behaviors of Eu(III) and Am(III) ions were studied by slope analyses, electrospray ionization mass spectrometry (ESI-MS), and extended X-ray absorption fine structure (EXAFS) spectroscopy. The results indicated that the trivalent metal ions were extracted as 1:2 and 1:3 complexes for all three BisDGA ligands during the extraction. Density functional theory (DFT) calculations verified the relevant experimental conclusion that the selectivity of THEE-BisDGA for Eu(III) is better than that for Am(III). The metal-DGA bonds in the ML3(NO3)(3) complexes seem to be stronger than those in ML2(NO3)(3) complexes. |
| 学科主题 | Chemistry |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20436]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Shi, WQ (corresponding author), Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China. 2.Yuan, LY |
| 推荐引用方式 GB/T 7714 | Ren, Peng,Wang, Cong-Zhi,Tao, Wu-Qing,et al. Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations[J]. INORGANIC CHEMISTRY,2020,59(19):14218-14228. |
| APA | Ren, Peng.,Wang, Cong-Zhi.,Tao, Wu-Qing.,Yang, Xiao-Fan.,Yang, Su-Liang.,...&Shi, Wei-Qun.(2020).Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations.INORGANIC CHEMISTRY,59(19),14218-14228. |
| MLA | Ren, Peng,et al."Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations".INORGANIC CHEMISTRY 59.19(2020):14218-14228. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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