title: 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.
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Feihong
authors.initials: F
authors.lastname: Wang
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Hongpeng
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Zhanshuang
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Rumin
authors.initials: R
authors.lastname: Li
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.
authors.forename: Hongsen
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Institute of Advanced Marine Materials, Harbin Engineering University, 150001, P. R. China.
authors.forename: Lianhe
authors.initials: L
authors.lastname: Liu
authors.affiliation: Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia.
authors.forename: G A
authors.initials: GA
authors.lastname: Emelchenko
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China.|Institute of Advanced Marine Materials, Harbin Engineering University, 150001, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang