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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201906615
|2 doi
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|a pubmed24n1019.xml
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|a eng
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| 100 |
1 |
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|a Yan, Bingjie
|e verfasserin
|4 aut
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| 245 |
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|a An Ion-Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Large-scale uranium extraction from seawater is a crucial but challenging part of nuclear power generation. In this study, a new ion-crosslinked supramolecular Zn2+ -poly(amidoxime) (PAO) hydrogel that can super-efficiently adsorb uranium from seawater is explored. By simply mixing two solutions of zinc chloride and PAO, a supramolecular Zn2+ -PAO hydrogel is achieved via the interaction between zinc cations and amidoxime anions. In contrast with existing amidoxime-functionalized hydrogel-based adsorbents having low PAO contents and fiber-based adsorbents with weak hydrophilicity, the PAOs can be directly crosslinked using a small quantity of superhydrophilic zinc ion. Thus, a supramolecular hydrogel is formed, having both a high content of well-dispersed PAOs and good hydrophilicity. Relative to reported adsorbents, this low-cost hydrogel membrane exhibits outstanding uranium adsorption performance, reaching 1188 mg g-1 of MU /Mdry gel in 32 ppm uranium-spiked water. More importantly, after immersion in natural seawater for only 4 weeks, the uranium extraction capacity of the Zn2+ -PAO hydrogel membrane reaches 9.23 mg g-1 of MU /Mdry gel . This work can provide a general strategy for designing a new type of supramolecular hydrogel, crosslinked by various bivalent/multivalent cation-crosslinkers and even many other superhydrophilic supramolecular crosslinkers, for the high-efficient and massive extraction of uranium from seawater
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|a Journal Article
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|a ionic crosslinking
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|a poly(amidoxime)
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|a seawater
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|a supramolecular hydrogel membranes
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|a uranium extraction
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| 700 |
1 |
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|a Ma, Chunxin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gao, Jinxiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yuan, Yihui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Ning
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 10 vom: 18. März, Seite e1906615
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