Strategies for designing highly efficient adsorbents to capture uranium from seawater

Li, Yun; Zheng, Yajun; Ahamd, Zia; Zhu, Lixuan; Yang, Jiajia; Chen, Jiping; Zhang, Zhiping

doi:10.1016/j.ccr.2023.215234

Cited by 24 publications

(8 citation statements)

References 172 publications

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“…1,2 Traditional uranium ore mining faces various challenges, 3 such as ore scarcity and environmental damage. 4 In comparison, the amount of uranium resources in seawater is enormous, approximately 4500 times that of land-based uranium resources. 1,5,6 Therefore, extracting uranium from seawater undoubtedly offers a pathway with immense potential and economic value.…”

Section: Introductionmentioning

confidence: 99%

Nickel single atom mediated phosphate functionalization of moss derived biochar effectively enhances electrochemical uranium extraction from seawater

Feng,

Dong,

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Nickel single atom mediated phosphate functionalization of moss derived biochar effectively enhances electrochemical uranium extraction from seawater

Feng,

Dong,

et al. 2024

J. Mater. Chem. A

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“…Currently, the utilization of uranium as nuclear fuel heavily relies on land-based ore extraction. However, the limited availability of land-based uranium resources is constraining the progress in nuclear power development . The ocean contains a vast amount of mineral resources, including a total uranium content of 4.5 billion tons, which is 1000 times greater than that found on land.…”

Section: Introductionmentioning

confidence: 99%

“…However, the limited availability of land-based uranium resources is constraining the progress in nuclear power development. 3 The ocean contains a vast amount of mineral resources, including a total uranium content of 4.5 billion tons, which is 1000 times greater than that found on land. The extraction of uranium from seawater is primarily impeded by the extremely low concentration (∼3.3 μg L −1 ), complex marine environment, and presence of numerous competitive ions.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Nitride Imide Nanotubes for Uranium Capture from Seawater

Zhao,

Wang,

Wang

et al. 2024

ACS Nano

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Nuclear power plays a pivotal role in the global energy supply. The adsorption-based extraction of uranium from seawater is crucial for the rapid advancement of nuclear power. The phosphorus nitride imide (PN) nanotubes were synthesized in this study using a solvothermal method, resulting in chemically stable cross-linked tubular hollow structures that draw inspiration from the intricate snowflake fractal pattern. Detailed characterization showed that these nanotubes possess a uniformly distributed five-coordinated nanopocket, which exhibited great selectivity and efficiency in binding uranium. PN nanotubes captured 97.34% uranium from the low U-spiked natural seawater (∼355 μg L −1 ) and showed a high adsorption capacity (435.58 mg g −1 ), along with a distribution coefficient, K d U > 8.71 × 10 7 mL g −1 . In addition, PN nanotubes showed a high adsorption capacity of 7.01 mg g −1 in natural seawater. The facile and scalable production of PN nanotubes presented in this study holds implications for advancing their large-scale implementation in the selective extraction of uranium from seawater.

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“…Maximum uranium absorption values exceeding 1g of uranium per g of material (i.e., g U/g COF) have been achieved at COFs and URS . Improved separation strategies like URS are critical for the use of uranium as a fuel in nuclear power for fuel recycling, and its environmental capture and recovery. − …”

Section: Introductionmentioning

confidence: 99%

Reversible Amine-to-Imine Chemistry at a Covalent Organic Framework for Sustainable Uranium Redox Separation

Wu,

Li,

Chen

et al. 2024

ACS Sustainable Chem. Eng.

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The interconversion chemistry of amine-to-imine sites in a covalent organic framework (COF) was developed for the redox-based separation of uranium. Compared to traditional approaches using sacrificial reagents or material decomposition for the reduction and separation of uranium, amine-COF served as the electron donor and was regenerated repeatedly following the oxidation and uranium reduction/separation. The amine-COF, PI-3-AR, was formed from the sodium borohydride (NaBH4) reduction of the imine-linked COF, PI-3, prepared from the solvothermal synthesis of 1,3,5-triformyl benzene (TFB) and 4,4′,4″-(1,3,5-triazine-2,4,6-triyl)trianiline (TTA). PI-3-AR could be converted back to PI-3 via oxidative amination using an excess of the oxidant iodine, I2, or in the photochemical reduction of uranyl ions (UO2 2+). In consecutive photochemical uranium reduction and separation cycling experiments, the reduced amine COF, PI-3-AR, underwent: (i) oxidation alongside uranium photoreduction and deposition; (ii) acid treatment and uranium extraction; and (iii) NaBH4 reduction and material recovery. The COF, PI-3-AR, and novel separation process involving amine-to-imine interconversion effectively removed uranium (maximum adsorption = 278 mg U/g COF) and maintained >98% uranium recovery over five recycling steps at pH 4.0.

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Strategies for designing highly efficient adsorbents to capture uranium from seawater

Cited by 24 publications

References 172 publications

Nickel single atom mediated phosphate functionalization of moss derived biochar effectively enhances electrochemical uranium extraction from seawater

Nickel single atom mediated phosphate functionalization of moss derived biochar effectively enhances electrochemical uranium extraction from seawater

Phosphorus Nitride Imide Nanotubes for Uranium Capture from Seawater

Reversible Amine-to-Imine Chemistry at a Covalent Organic Framework for Sustainable Uranium Redox Separation

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