A novel ion-imprinted amidoxime-functionalized UHMWPE fiber based on radiation-induced crosslinking for selective adsorption of uranium.

ABSTRACT: A novel uranium-imprinted adsorbent (AO-Imp fiber) was prepared by radiation-induced crosslinking of amidoxime-functionalized ultra-high molecular weight polyethylene fiber (AO fiber). The porous structure was characterized by scanning electron microscopy (SEM) and positron annihilation lifetime (PAL) spectroscopy after ion imprinting. This ion-imprinted fiber exhibited enhanced adsorption selectivity for uranium in the form of both UO₂ ^2- and [UO₂(CO₃)₃]^4- in batch experiments. Compared with AO fiber, the adsorption capacity of the AO-Imp(250) fiber for uranium increased from 0.36 mg g^-1 to 1.00 mg g^-1 in simulated seawater and from 5.02 mg g^-1 to 12.03 mg g^-1 in simulated acid ef

SUBMITTER: Ao J 

PROVIDER: S-EPMC9071111 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature