Synthesis of aluminananosheetsvia supercritical fluid technology with high uranyl adsorptive capacity

Yu, Jing; Bai, Huiyu; Wang, Jun; Li, Zhanshuang; Jiao, Caishan; Liu, Qi; Zhang, Milin; Liu, Lianhe

doi:10.1039/c2nj40514h

Cited by 63 publications

(26 citation statements)

References 39 publications

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“…However, the proven uranium ore reserves on land are limited, and can only provide for about 70 years of consumption of global nuclear energy . To efficiently recover uranium from seawater, for the long‐term sustainable development of nuclear power, many types of uranium adsorbents have been developed, such as inorganic materials, synthetic organic and polymeric materials, various nanostructured adsorbents including grafted polymeric porous supports, metal–organic frameworks, covalent organic frameworks, porous carbons, porous aromatic frameworks, porous‐organic polymers, and recent protein/biomass‐based materials . For all this, a great number of technical difficulties are associated with massive uranium extraction from seawater, because of the ultralow concentrations of uranium and the severe interference of massive coexisting ions, as well as the complicated biological environment which can corrode/destroy the adsorbents and devices .…”

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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“…The peak at 1070 cm −1 can be assigned to the monohydrate Al-O-H. The peaks and shoulder at <1070 cm −1 (760 and 650 cm −1 ) are related to the associated torsional modes [19]. The smaller peaks between 1350 and 1700 cm −1 can be assigned to C which is bonded to O or H. [19,20].…”

Section: B Exposure Of Bare Ag To Nacl Solution and Na 2 S Solutionmentioning

confidence: 99%

“…This peak at ∼960 cm −1 originates from the bending vibration of Al-O-Al and thus from the absorbance of Al 2 O 3 [17,18]. The broad peak at ∼3430 cm −1 is caused by stretching and bending modes of absorbed water (O-H) [19]. The peak at 1070 cm −1 can be assigned to the monohydrate Al-O-H.…”

Section: B Exposure Of Bare Ag To Nacl Solution and Na 2 S Solutionmentioning

confidence: 99%

“…This transformation can be understood as dissolution of amorphous Al 2 O 3 and transformation into hydrolyzed Al 2 O 3 products due to the reaction with water. The hydrolyzed Al 2 O 3 exists as aluminum hydroxide AlOH 3 , boehmite [AlO(OH)], boehmite-like and more amorphous configurations [17][18][19][20]. After a 12 h exposure to moisture at ∼45°C, almost the complete Al 2 O 3 layer is transformed into hydrolyzed products AlO X OH Y , both for the sputtered and for the ALD-deposited Al 2 O 3 films.…”

Section: B Exposure Of Bare Ag To Nacl Solution and Na 2 S Solutionmentioning

confidence: 99%

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Description of particle induced damage on protected silver coatings

et al. 2015

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In the visible to infrared spectral range, highly-reflective silver mirrors are applied in the manufacture of optical instruments such as telescopes. However, it is still difficult to combine high reflectivity and long-term stability of the protected silver coating. We show that the deposition of impervious protective layers is necessary but often not sufficient for long-term environmental stability. Hygroscopic air borne particles absorbed by the protections surface attract water molecules and form a solution. This solution first damages the protection, subsequently permeates the protection and finally damages the silver whereby the reflectivity is reduced. We demonstrate this particular damage mechanism with different experiments and describe this mechanism in detail.

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“…The aluminium ions had been effectively doped into the ZnO crystal lattice to form the ZAO solid solution. [29] (III). The absorbance peak at about 3445 cm À1 , which was relatively stronger, caused by the stretching vibration of O-H bonds, and the one at 1630 cm À1 , resulting from the stretching vibration of H-O-H, indicated the existence of water, which functioned as the solvent in the FT-IR test process.…”

Section: Anticorrosion Testmentioning

confidence: 99%

The facile synthesis, properties and application of ZAO nanomaterials

Deng

Liu

et al. 2014

Journal of Experimental Nanoscience

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Aluminium-doped zinc oxide (ZAO) nanocrystals with uniform size, high purity and good degree of crystallinity were prepared by an ultrasonic-microwave assisted method. The structure, optical properties and morphologies of ZAO nanocrystals were characterised by X-ray powder diffraction, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy and transmission electron microscopy, while the photocatalytic and anticorrosive effects of the product were studied by the degradation test of rhodamine B and salt spray corrosive test, respectively. The effects were quite satisfactory.

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Synthesis of aluminananosheetsvia supercritical fluid technology with high uranyl adsorptive capacity

Cited by 63 publications

References 39 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

Description of particle induced damage on protected silver coatings

The facile synthesis, properties and application of ZAO nanomaterials

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