Construction of gel-like swollen-layer on Polyacrylonitrile Surface and Its Swelling Behavior and Uranium Adsorption Properties

Ju, Peihai; Guo, Hui; Bai, Jianwei; Liu, Qi; Zhang, Hongsen; Liu, Jingyuan; Yu, Jing; Chen, Rongrong; Wang, Jun

doi:10.1016/j.jcis.2020.04.080

Cited by 30 publications

(13 citation statements)

References 44 publications

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“…For example, amidoxime-functionalized porous MOF material (MIL-101-AO) shows an adsorption capacity much better than that of MIL-101. 14 …”

Section: Mof-based Materials For Uranium Adsorptionmentioning

confidence: 99%

“…For example, amidoximefunctionalized porous MOF material (MIL-101-AO) shows an adsorption capacity much better than that of MIL-101. 14 In addition, the ionic radius of metal nodes has a rather sensitive influence on the adsorption capacity for uranium(VI). Zhang et al obtained the maximum U(VI) adsorption capacities (mg/g) of Ln-MOFs to be 265, 274, 371, 467, 478, 515, and 538 mg/g for Sm-MOF, Eu-MOF, Gd-MOF, Tb-MOF, Dy-MOF, Er-MOF, and Y-MOF, respectively, indicating that the U(VI) adsorption capacity continuously increases as the ionic radii of these lanthanide metals decrease.…”

Section: +mentioning

confidence: 99%

“… 8 − 10 In addition, at the current rate of depletion, the entire land mass of uranium reserves will last less than a century, 11 and the development of marine uranium resources (about 4.5 billion tons) which is nearly 1000 times the entire uranium reserves is of considerable significance for the sustainable and rapid development of the nuclear industry, as it can improve the overall utilization of available uranium resources. 12 − 14 Based on the above-mentioned circumstances, detection, separation, and recovery of uranium are significant for both maintaining the ecology and rationally using uranium resources.…”

Section: Introductionmentioning

confidence: 99%

“…The gradual depletion of nonrenewable fossil energy sources such as oil, coal, and natural gas has made the development of efficient and clean new energy sources an urgent need, and the large-scale development of nuclear energy has become an inevitable choice. − At the same time, radionuclide applications in military, industry, agriculture, medicine, and other scientific research fields are becoming more and more widespread. The amount of radioactive waste gas, wastewater, and solid wastes resulting from these applications is also increasing, especially the amount of radioactive wastewater, and the total amount of radioactivity it contains is very large. , In radioactive wastewater, UO 2 2+ ion with a high water solubility and a half-life of up to 4.5 × 10 9 years can enter into the human body through groundwater and surface water and be deposited in our livers, kidneys, and bones, causing uranium poisoning. − In addition, at the current rate of depletion, the entire land mass of uranium reserves will last less than a century, and the development of marine uranium resources (about 4.5 billion tons) which is nearly 1000 times the entire uranium reserves is of considerable significance for the sustainable and rapid development of the nuclear industry, as it can improve the overall utilization of available uranium resources. − Based on the above-mentioned circumstances, detection, separation, and recovery of uranium are significant for both maintaining the ecology and rationally using uranium resources.…”

Section: Introductionmentioning

confidence: 99%

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Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Liu

Mao

2022

ACS Omega

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The steady supply of uranium resources and the reduction or elimination of the ecological and human health hazards of wastewater containing uranium make the recovery and detection of uranium in water greatly important. Thus, the development of effective adsorbents and sensors has received growing attention. Metal–organic frameworks (MOFs) possessing fascinating characteristics such as high surface area, high porosity, adjustable pore size, and luminescence have been widely used for either uranium adsorption or sensing. Now pertinent research has transited slowly into simultaneous uranium adsorption and detection. In this review, the progress on the research of MOF-based materials used for both adsorption and detection of uranium in water is first summarized. The adsorption mechanisms between uranium species in aqueous solution and MOF-based materials are elaborated by macroscopic batch experiments combined with microscopic spectral technology. Moreover, the application of MOF-based materials as uranium sensors is focused on their typical structures, sensing mechanisms, and the representative examples. Furthermore, the bifunctional MOF-based materials used for simultaneous detection and adsorption of U(VI) from aqueous solution are introduced. Finally, we also discuss the challenges and perspectives of MOF-based materials for uranium adsorption and detection to provide a useful inspiration and significant reference for further developing better adsorbents and sensors for uranium containment and detection.

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“…For example, amidoxime-functionalized porous MOF material (MIL-101-AO) shows an adsorption capacity much better than that of MIL-101. 14 …”

Section: Mof-based Materials For Uranium Adsorptionmentioning

confidence: 99%

Section: +mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Liu

Mao

2022

ACS Omega

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“…Up to now, there have been some reports on the use of functionalized UiO-66 for adsorption and separation. ,, Dynamic adsorption column experiments, however, were rarely reported. , In view of practical applications, we further performed column experiments using UiO-66-2COOH as packing materials. Before the column experiments, we accessed the stability and reusability of UiO-66-2COOH for U(VI) and Eu(III) adsorption.…”

Section: Dynamic Adsorptionmentioning

confidence: 99%

Carboxylated UiO-66 Tailored for U(VI) and Eu(III) Trapping: From Batch Adsorption to Dynamic Column Separation

Zhao

Yuan

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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U(VI) and Eu(III), as representative elements of the hexavalent actinide and trivalent lanthanides (always as a chemical analogue for trivalent actinide), respectively, have attracted more and more attentions due to the widespread use of nuclear energy. Much effort has been focused on developing versatile materials for their uptake from aqueous solution. For the first time, we report here UiO-66 and its mono- (UiO-66-COOH) and di-carboxyl (UiO-66-2COOH) functional derivatives as robust adsorbents for efficient U(VI) and Eu(III) removal. It is found that the introduction of carboxyl groups greatly reduces the surface charge of UiO-66, thus guaranteeing excellent adsorption capacity at low pH. At pH = 3, for example, the adsorption capacity of UiO-66-2COOH for U(VI) and Eu(III) is more than 100 and 60 mg/g, respectively, while almost no adsorption occurs for pristine UiO-66. At pH = 4, both UiO-66-COOH and UiO-66-2COOH show high performance on U(VI) and Eu(III) removal. UiO-66-COOH has adsorption capacities of 80 and 43 mg/g for U(VI) and Eu(III), respectively, while the values for UiO-66-2COOH reach 150 and 80 mg/g, respectively. Also, all these materials achieve adsorption equilibrium within 100 min. More importantly, combining the needs of practical applications and the characteristics of high stability, high porosity, and excellent adsorption performance of UiO-66-2COOH, dynamic adsorption column experiments were successfully conducted; ∼99% U(VI)/Eu(III) can be efficiently adsorbed, and >90% adsorbed U(VI)/Eu(III) can be re-collected with dilute nitric acid solution, even after four adsorption–desorption cycles. The findings of this work demonstrate the application potential of metal–organic framework materials to remove radionuclides from environmental samples or nuclear waste liquids.

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Phytic acid modified polyacrylonitrile nanofiber membranes: Fabrication, characterization, and optimization for Pb²⁺ adsorption

Li,

Liu,

Chi

et al. 2024

Polymer Engineering & Sci

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Phytic acid (PA) modified polyacrylonitrile (PAN) nanofiber membranes for heavy metal adsorption were fabricated using electrospinning for the first time, and its mechanical properties and heavy metal adsorption under various conditions were tested. The results demonstrated that PA modification improved the mechanical properties of PAN nanofiber membranes at low modification ratio due to increased intermolecular hydrogen bonds and cross‐linking. The highest breaking strength and elongation at break were 70.1% and 31.5% over PAN without modification when the PA:PAN ratio was close to 1:5. The Pb2+ absorption tests in the water solutions demonstrated that the optimal PA:PAN ratio was 1:1, the optimal temperature was 30°C, and the optimal pH was 7. With the optimal parameters, the adsorption capacity reached the maximum and equilibrium after 4 h. The adsorption capacities increased with higher initial Pb2+ concentrations. The highest adsorption capacity in this study was approximately 240.1 mg g−1 at the initial Pb2+ concentration of 750.72 mg L−1. In addition, after de‐adsorption process, the 1:1 PA modified membranes maintained 91.9% re‐adsorption capacities compared to primary adsorption. Consequently, the PA‐modified PAN nanofiber membranes showed promising potentials of metal ion adsorption in wastewater treatment.Highlights Phytic acid modified polyacrylonitrile nanofiber membranes were fabricated. Low ratio modification improved the mechanical properties. The optimal modification ratio for Pb2+ adsorption is 1:1. The maximum Pb2+ adsorption capacity was 240.1 mg g−1 in this study. The membranes maintained 91.9% capacities at re‐adsorption tests.

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Construction of gel-like swollen-layer on Polyacrylonitrile Surface and Its Swelling Behavior and Uranium Adsorption Properties

Cited by 30 publications

References 44 publications

Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Carboxylated UiO-66 Tailored for U(VI) and Eu(III) Trapping: From Batch Adsorption to Dynamic Column Separation

Phytic acid modified polyacrylonitrile nanofiber membranes: Fabrication, characterization, and optimization for Pb²⁺ adsorption

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Construction of gel-like swollen-layer on Polyacrylonitrile Surface and Its Swelling Behavior and Uranium Adsorption Properties

Cited by 30 publications

References 44 publications

Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Metal–Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution

Carboxylated UiO-66 Tailored for U(VI) and Eu(III) Trapping: From Batch Adsorption to Dynamic Column Separation

Phytic acid modified polyacrylonitrile nanofiber membranes: Fabrication, characterization, and optimization for Pb2+ adsorption

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Product

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Phytic acid modified polyacrylonitrile nanofiber membranes: Fabrication, characterization, and optimization for Pb²⁺ adsorption