title: Radiation Effect of Carboxyl-Functionalized Task-Specific Ionic Liquids on UO22+Removal: Experimental Study with DFT Validation.
abstract: Experimental study with DFT validation on the effect of radiation on 1-carboxymethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([HOOCCH2MIM][NTf2]) as a solvent and extractant in rapid homogeneous extraction of UO22+was performed for the first time. The radiolytic products of the anions and cations of [HOOCCH2MIM][NTf2] were identified by19F NMR and high-resolution ESI-MS, respectively, and they were attributed to a decrease in UO22+partitioning. Experimental study with DFT validation for complexing reactions between [HOOCCH2MIM][NTf2] and radiolytic products proved that F-competition was one of the main reasons for the decrease in UO22+partitioning. However, UO22+partitioning in irradiated [HOOCCH2MIM][NTf2] can largely be recovered after thorough water washing because of the removal of radiolytic products of [NTf2]-.
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900, People's Republic of China.
authors.forename: Yinyong
authors.identifier: 0000-0002-0364-216X
authors.initials: Y
authors.lastname: Ao
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900, People's Republic of China.
authors.forename: Jian
authors.initials: J
authors.lastname: Chen
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900, People's Republic of China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Chen
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China.
authors.forename: Jiuqiang
authors.initials: J
authors.lastname: Li
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China.
authors.forename: Maolin
authors.initials: M
authors.lastname: Zhai