Supramolecular assembly of ionic liquid induced by UO2
2+: a strategy for selective extraction-precipitation
Author:
Feng Shancheng1, Shen Xinghai1
Affiliation:
1. 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
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.
Funder
National Natural Science Foundation of China
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
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