Engineering robust metal–phenolic network membranes for uranium extraction from seawater

Luo, Wei; Xiao, Gao; Tian, Fan; Richardson, Joseph J.; Wang, Yaping; Zhou, Jianfei; Guo, Junling; Liao, Xuepin; Shi, Bi

doi:10.1039/c8ee01438h

Cited by 311 publications

(129 citation statements)

References 51 publications

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“…The sample a and i are this Zn 2+ –PAO hydrogel membrane, the other adsorption capacities of (b–k) and (m–o) samples were cited from refs. 35, 36, 47–50, 39, 51–55, and 42, respectively.…”

Section: Methodsmentioning

confidence: 99%

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

et al. 2020

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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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Section: Methodsmentioning

confidence: 99%

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

et al. 2020

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“…[1] Theo cean is estimated to contain about 4.5 billion tons of uranium, which is renewed constantly and is theoretically an inexhaustible supply of uranium. [2] Highefficient recovery of marine uranium is proposed as an alternative to counteract the gradual reduction in quantity of conventional uranium ores. [3] Ther ecovery of uranium from seawater has received constant attention during the past 60 years.…”

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confidence: 99%

Photoinduced Multiple Effects to Enhance Uranium Extraction from Natural Seawater by Black Phosphorus Nanosheets

et al. 2019

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Based on the photoinduced photothermal, photoelectric, and photocatalytic effects of black phosphorus (BP) nanosheets, a BP‐PAO fiber with enhanced uranium extraction capacity and high antibiofouling activity is fabricated by compositing BP nanosheets into polyacrylamidoxime (PAO). The photothermal effect increases the coordination interaction between UO22+ and the functional amidoxime group, and the photoelectric effect produces the surface positive electric field that exhibits electrostatic attraction to the negative [UO2(CO3)3]4−, which all increase the capacity for uranium adsorption. The photocatalytic effect endows the adsorbent with high antibiofouling activity by producing biotoxic reactive oxygen species. Owing to these three photoinduced effects, the photoinduced BP‐PAO fiber shows a high uranium adsorption capacity of 11.76 mg g−1, which is 1.50 times of the PAO fiber, in bacteria‐containing natural seawater.

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“…AuNPs are biocompatible and have been approved by FDA as generally recognized as safe (GRAS) and for drug use . Polyphenol moieties can be further functionalized via their hydroxy groups and active carbon sites . Another form of nanoparticle is the hollow DNA buckyball assembled by DNA origami .…”

Section: Figurementioning

confidence: 99%

Unidirectional Presentation of Membrane Proteins in Nanoparticle‐Supported Liposomes

Chen

Cai

et al. 2019

Angewandte Chemie

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Presentation of membrane proteins to host immune systems has been a challenging problem owing to complexity arising from the poor in vivo stability of the membrane‐mimetic media often used for solubilizing the membrane proteins. The use of functionalized, biocompatible nanoparticles as substrates is shown to guide the formation of proteoliposomes, which can present many copies of membrane proteins in a unidirectional manner. The approach was demonstrated to present the membrane‐proximal region of the HIV‐1 envelope glycoprotein. These nanoparticle‐supported liposomes are broadly applicable as membrane antigen vehicles for inducing host immune responses.

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Engineering robust metal–phenolic network membranes for uranium extraction from seawater

Abstract: Biomass-derived membrane used for uranium extraction of natural seawater from the East China Sea through the formation of metal–phenolic networks.

Cited by 311 publications

References 51 publications

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

Photoinduced Multiple Effects to Enhance Uranium Extraction from Natural Seawater by Black Phosphorus Nanosheets

Unidirectional Presentation of Membrane Proteins in Nanoparticle‐Supported Liposomes

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