摘要
One phosphine oxide-based pillar[5]arene 1a and two novel phosphorous-based pillar[5]arenes 1b and 1c were synthesized for use as extractants in solvent extraction of 22UO+.The results from host-guest interactions pertinent to the extracted complexes of 1a-1c revealed a significant difference in complexation capability between 1a and 1b(or 1c)by using 1H NMR,31P NMR and FT-IR techniques.The extraction of 22UO+in separate extraction sys-tem and in simulated nuclear industry effluent containing 12 competing ions demonstrated the superior efficiency and selectivity of 1a towards 22UO+over other cations in acidic feed.Log-log plot analysis indicated the 1∶1 stoichiometry(ligand/metal)for the extracted complex formed between the ligand and 22UO+.
基金
the National Natural Sci-ence Foundation of China(21471105 and 21371124)
the National Science Foundation for Fostering Tal-ents in Basic Research of the National Natural Science Foundation of China(J1210004 and J1103315)for funding this work.
