Amidoxime Selective Adsorption for Uranyl and Transition Metals

摘要

Uranium is the most useful resource in nuclear reactor. But the land resource won't satisfy the nuclear reactor in the future. There still exists a large amountofuraniumin the seawater. The seawater environment has been simulated by Amsterdam Density Functional (ADF) forgetting an order between uranyl ((UO_2)~(2+)) and transtition metals under the amidoxime selective adsorpition. Amidoxime selective adsorption for uranyl (UO_2~(2+)) and transition metals was calculated. The results show that the order of different transition metals with amidoxime in the water environment is Fe(III)> Ni(II)> Co(II)> Cu(II)>UO_2(VI), based on the designation of ligand structure, bond lengths, the thermodynamic parameters, and the relation between frequency and absorption intensity. Maybe it means the transition metal combines with amidoxime than uranium easier.