1
|
Feng S, Shen X. Supramolecular assembly of ionic liquid induced by UO2
2+: a strategy for selective extraction-precipitation. RADIOCHIM ACTA 2020. [DOI: 10.1515/ract-2020-0038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this work, a novel task specific ionic liquid (TSIL) [tributyl(hexyl)phosphonium]2[diglycolic acetate] ([P6,4,4,4]2[DGA]) was prepared and used to construct a vesicle system. The addition of UO2
2+, La3+ or Th4+ exhibited different effects on the system. It was found that small amount of UO2
2+ could induce large-sized aggregation of vesicles and make the precipitation happen, while La3+ and Th4+ did not have such capacity. The whole process was characterized by dynamic light scattering and freeze-fracture transmission electron microscopy. An extraction-precipitation strategy was then developed for the selective recovery of UO2
2+. Different factors were further studied to optimize the separation efficiency of the extraction-precipitation process.
Collapse
Affiliation(s)
- Shancheng Feng
- Beijing National Laboratory for Molecular Sciences (BNLMS), Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory , Center for Applied Physics and Technology, College of Chemistry and Molecular Engineering, Peking University , Beijing, 100871 , PR China
| | - Xinghai Shen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory , Center for Applied Physics and Technology, College of Chemistry and Molecular Engineering, Peking University , Beijing, 100871 , PR China
| |
Collapse
|