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A graphene oxide/amidoxime hydrogel for enhanced uranium capture.


ABSTRACT: The efficient development of selective materials for the recovery of uranium from nuclear waste and seawater is necessary for their potential application in nuclear fuel and the mitigation of nuclear pollution. In this work, a graphene oxide/amidoxime hydrogel (AGH) exhibits a promising adsorption performance for uranium from various aqueous solutions, including simulated seawater. We show high adsorption capacities (Qm?=?398.4?mg g(-1)) and high % removals at ppm or ppb levels in aqueous solutions for uranium species. In the presence of high concentrations of competitive ions such as Mg(2+), Ca(2+), Ba(2+) and Sr(2+), AGH displays an enhanced selectivity for uranium. For low uranium concentrations in simulated seawater, AGH binds uranium efficiently and selectively. The results presented here reveal that the AGH is a potential adsorbent for remediating nuclear industrial effluent and adsorbing uranium from seawater.

SUBMITTER: Wang F 

PROVIDER: S-EPMC4725816 | biostudies-other | 2016

REPOSITORIES: biostudies-other

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A graphene oxide/amidoxime hydrogel for enhanced uranium capture.

Wang Feihong F   Li Hongpeng H   Liu Qi Q   Li Zhanshuang Z   Li Rumin R   Zhang Hongsen H   Liu Lianhe L   Emelchenko G A GA   Wang Jun J  

Scientific reports 20160113


The efficient development of selective materials for the recovery of uranium from nuclear waste and seawater is necessary for their potential application in nuclear fuel and the mitigation of nuclear pollution. In this work, a graphene oxide/amidoxime hydrogel (AGH) exhibits a promising adsorption performance for uranium from various aqueous solutions, including simulated seawater. We show high adsorption capacities (Qm = 398.4 mg g(-1)) and high % removals at ppm or ppb levels in aqueous soluti  ...[more]

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