Aluminum-based metal-organic frameworks (CAU-1) highly efficient UO22+ and TcO4− ions immobilization from aqueous solution

Zhong, Xin; Liang, Wen; Wang, Hong; Xue, Chao; Hu, Baowei

doi:10.1016/j.jhazmat.2020.124729

Cited by 99 publications

(36 citation statements)

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“…(ii) Adsorption sites and adsorption energy ( E ads ) were determined by the adsorption locator module. The supercell was constructed by slicing the (0,0,1) surface of NH 2 -MIL-125(Ti) ( a = b = 18.6543 Å, c = 18.49605 Å) and inserting a 10 Å thick vacuum layer to prevent interactions. , (iii) The single point energy, band structure, and density of states (DOS) before and after UO 2 2+ ion adsorption were calculated using the DMol3 module with the solvation model; also, the SCF was set to 1.0 × 10 –5 Ha and the Monkhorst–Pack grid k -points were set to 3 × 3 × 1. The E ads was calculated by eq . , Herein, E NH 2 ‑MIL‑125(Ti)‑U , E NH 2 ‑MIL‑125(Ti) , and E U are the total energies of the NH 2 -MIL-125(Ti) (0,0,1) surface adsorbing UO 2 2+ ion, NH 2 -MIL-125(Ti) (0,0,1) surface, and UO 2 2+ ion, respectively. …”

Section: Materials and Methodsmentioning

confidence: 99%

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution

Zhong

Liu

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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The binary nanocomposites of metal/covalent–organic frameworks (NH2-MIL-125(Ti)@TpPa-1) were constructed by solvothermal method, which was developed as a multifunctional platform with adsorption and photocatalysis for radionuclides removal. The batch experiments and physicochemical property (FT-IR, XRD, SEM, TEM, XPS, etc.) corroborated: (i) core–shell NH2-MIL-125(Ti)@TpPa-1 had a more stable, multilayer pore structure and abundant active functional groups; (ii) NH2-MIL-125(Ti)@TpPa-1 had fast a removal rate, as well as a high adsorption capacity of 536.73 mg (UO2 2+)/g and 593.97 mg (Eu3+)/g; (iii) the pseudo-second-order and Langmuir model provided a more reasonable description, indicating the immobilization process was endothermic, spontaneous chemisorption; (iv) the adsorption mechanism was chelation and electrostatic attraction, ascribed to the nitrogen/oxygen-containing functional groups. These results illustrated that NH2-MIL-125(Ti)@TpPa-1 was a prospective adsorbent for the remediation polluted by radionuclides. In addition, the research provided the theoretical basis for further investigation on the UO2 2+(VI) photoreduction.

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Section: Materials and Methodsmentioning

confidence: 99%

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution

Zhong

Liu

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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“…At low solution pH value, high concentration of H + competed with uranyl cations for binding sites on the surface of the adsorbent of GO-based nanomaterials, [114] thus reducing the adsorption efficiency of uranium(Ⅵ). With the increase of solution pH value, the surface of the adsorbent of GO-based nanomaterials becomes negatively charged due to the deprotonation process, at the same time, positive uranyl ionic complexes such as UO2OH ＋ , (UO2)2(OH)2 2＋ , and (UO2)3(OH)5 ＋ are formed, [115,116] and then the electrostatic forces enhance between the positive uranyl complexes and the negatively charged surface of the GO-based nanomaterials as adsorbents to improve the adsorption efficiency of uranium. Meanwhile, further increase of the solution pH value can induce the hydrolysis of uranium ions, which leads to the formation of anionic complexes such as UO2(CO3)3 4-, UO2(CO3)2 2-, (UO2)3(OH)7 -, UO2 (OH)3 -, or UO2(OH)2 precipitation, and eventually to the reduction of the uranium adsorption efficiency.…”

Section: Effect Of Solution Ph Valuementioning

confidence: 99%

Graphene Oxide-based Nanomaterials for Uranium Adsorptive Uptake

Liu¹,

Mao²

2021

ES Mater. Manuf.

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The growth of nuclear power generation and the necessity to acquire uranium reserves for energy security and pollution regulation for environmental protection put much emphasis on the removal and recovery of uranium from aqueous solutions. Adsorption has been proved to be a promising method for this purpose method because of its high adsorption efficiency, easy operation, low cost, reusability and availability of massive adsorbents. Among a wide variety of adsorbents, graphene oxide (GO) has demonstrated excellent adsorption potential for uranium uptake and recovery due to its unique 2D structure, high specific surface area and abundant oxygen-containing functional groups. Regarding the functional groups, it can make GO with high dispersion and hydrophilicity and participate in the complexation of uranium, leading to high adsorption efficiency for uranium. In this review, the research status and progress of GO-based nanomaterials for uranium adsorption are summarized. Their adsorption capacities, influencing factors, kinetics, isotherms and thermodynamics are compared and discussed. The microscopic mechanisms of uranium adsorption onto these GO-based nanomaterials are elaborated at molecular level by spectral analysis, surface complexation models, and theoretical calculations. Meanwhile, the challenges and research trends in the study of uranium adsorption by GO-based nanomaterials are pointed out. We believe that our focused review provides not only a summarizing reference on the current status of uranium removal and recovery by GObased nanomaterials, but also future directions for related follow-up research and practical applications.

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“…Therefore, U(VI) ions could easily migrate into Eco-environment, and health of human being and animals. (Qiu et al, 2021;Zhao et al, 2021;Zhong et al, 2021a). At present, various methods had been used to U(VI) removal and enrichment, including adsorption (Wang et al, 2021b;Zhong et al, 2021b), cation exchange (Taha, 2021;Venkateswara Rao et al, 2021), electrochemical treatment (Potgieter et al, 2020), photocatalytic treatment (Lei et al, 2021;Li et al, 2019), chemical precipitation (Lu et al, 2019;Zheng et al, 2020), etc.…”

Section: Introductionmentioning

confidence: 99%

High-speed and efficient removal of uranium (VI) from aqueous solution by hydroxyapatite-modified ordered mesoporous carbon (CMK-3)

Минг

Deng

Ren

et al. 2022

Environ Sci Pollut Res

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In recent years, the synthesis and application of green, cost-effective and sustainable materials for uranium (VI) removal was signi cant to environmental protection. The ordered mesoporous carbon (CMK-3) supported different mass of hydroxyapatite materials (HAP@CMK-3) were facilely synthesized via hydrothermal method. The resultant materials were characterized by XRD, FT-IR, BET, SEM, TEM-mapping and XPS, and implemented for immobilizing U(VI). Not only the speci c surface area of HAP (7.01 m 2 /g) was increased by the loading on CMK-3 (818.37 m 2 /g), but also the adsorption capacity of CMK-3 was increased by HAP modi cation.Impressively, HAP@CMK-3 exhibited highly adsorption capacity of U(VI) with the increase of HAP deposition and was capable of achieving fast reaction. Therein to, the speci c surface area of HAP@CMK-3(2:1) was 253.68 m 2 /g, as well as the adsorption capacity was up to 1072 mg/g ( tted by Langmuir isotherm, at pH = 3.0, 298 K) and the adsorption process was completed in 30 min (followed by pseudo-second-order kinetic).

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Aluminum-based metal-organic frameworks (CAU-1) highly efficient UO22+ and TcO4− ions immobilization from aqueous solution

Cited by 99 publications

References 50 publications

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution

Graphene Oxide-based Nanomaterials for Uranium Adsorptive Uptake

High-speed and efficient removal of uranium (VI) from aqueous solution by hydroxyapatite-modified ordered mesoporous carbon (CMK-3)

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Aluminum-based metal-organic frameworks (CAU-1) highly efficient UO22+ and TcO4− ions immobilization from aqueous solution

Cited by 99 publications

References 50 publications

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO22+ and Eu3+ Ions from Solution

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO22+ and Eu3+ Ions from Solution

Graphene Oxide-based Nanomaterials for Uranium Adsorptive Uptake

High-speed and efficient removal of uranium (VI) from aqueous solution by hydroxyapatite-modified ordered mesoporous carbon (CMK-3)

Contact Info

Product

Resources

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Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution

Construction of Core–Shell MOFs@COF Hybrids as a Platform for the Removal of UO₂²⁺ and Eu³⁺ Ions from Solution