Understanding the Mechanism and Ascertaining the Sorption Sites for the Highly Efficient and Selective Sorption of U(VI) and Th(IV) by Graphene/Zeolitic Imidazolate Framework-90 Composites: An Experimental and Theoretical Approach DOI
Jaideep Mor,

Nidhi Ludbe,

S.K. Sharma

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Efficient removal of radionuclides from aqueous solutions is utmost importance for public and environmental safety. The development efficient adsorbents a deeper understanding the adsorption mechanism are crucial designing superior adsorbents. In view this, present investigation deals with highly sorption U(VI) Th(IV) an acidic feed using multilayer graphene/Zeolitic Imidazolate Framework-90 (ZIF-90G) composite. This first ever report on utilization positron annihilation spectroscopy in order to ascertain sites three-dimensional pore network ZIF-90G. interaction ortho-positronium revealed that proceeded throughout preferential at aperture site. exothermic spontaneous was found be maximum pH ranging 3-4, predominantly following Langmuir isotherm pseudo-second-order rate kinetics. XPS spectra, appearance peaks ∼392.4 eV (U 4f5/2) ∼381.9 4f7/2) sorbed sample ∼344.01 (Th ∼334.81 evidenced effective sorption, while red shift O 1s spectrum (∼531.7 ∼534.4 ZIF-90G) indicated coordination metal ions through chelation carboxaldehyde functionalities. Elemental mapping scanning electron microscopy coupled energy dispersive X-ray also uniform Th(IV). Density functional theory absorption have been employed further molecular level.

Language: Английский

Calcium phytate cross-linked polysaccharide hydrogels for selective removal of U(VI) from tailings wastewater DOI
Lei Lan, Rui Zhang,

Rui‐Xiang Bi

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123343 - 123343

Published: Feb. 1, 2025

Language: Английский

Citations

0
Adsorption of Uranium (VI) from Copper Solution using Varion-AP and A500 Resins: Kinetics and Isotherm Study DOI

Amirhossein Wizan,

Davood Ghoddocynejad,

Mohammad Outokesh

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141830 - 141830

Published: Feb. 1, 2025

Language: Английский

Citations

0
Efficient and stable adsorption uranium from wastewater by P-ZBCT composite adsorbent at low dosage DOI

Kaiwen Luo,

Lieyu Zhang,

Qingliang Wang

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 306, P. 141405 - 141405

Published: Feb. 22, 2025

Language: Английский

Citations

0
Study on the Adsorption Mechanism and Response Surface Optimization of Fluorine and Phosphorus by the Red Clay in Guizhou DOI Creative Commons

Guidong Li,

Zhongmei Wang, Yifan Liu

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

The presence of fluorine and phosphorus in phosphogypsum leachate directly affects the local ecological environment groundwater quality. This paper examined adsorption characteristics by red clay near a landfill Guizhou Province, China, under different pH values, initial concentrations, soil dosages, particle sizes soil. Response surface methodology (RSM) was employed to optimize three factors (pH, concentration, dosage) selected Box-Behnken design that have great influence on single-factor adsorption. optimum condition for identified as = 3, concentration 91.08 mg/L, dosage 5.31 g, while 4.17, 99.49 5.82 g. Langmuir equation, quasi-secondary kinetic model, Elovich model were used fitting, which demonstrated good fitting. Finally, comparing characterization results scanning electron microscopy (SEM-EDX), X-ray diffraction (XRD), infrared spectroscopy (FTIR), process accompanied electrostatic addition chemical ligand exchange, result multiple effects. findings this study will provide reference prevention, control, management fluoro-phosphorus pollution dumps.

Language: Английский

Citations

0
Understanding the Mechanism and Ascertaining the Sorption Sites for the Highly Efficient and Selective Sorption of U(VI) and Th(IV) by Graphene/Zeolitic Imidazolate Framework-90 Composites: An Experimental and Theoretical Approach DOI
Jaideep Mor,

Nidhi Ludbe,

S.K. Sharma

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Efficient removal of radionuclides from aqueous solutions is utmost importance for public and environmental safety. The development efficient adsorbents a deeper understanding the adsorption mechanism are crucial designing superior adsorbents. In view this, present investigation deals with highly sorption U(VI) Th(IV) an acidic feed using multilayer graphene/Zeolitic Imidazolate Framework-90 (ZIF-90G) composite. This first ever report on utilization positron annihilation spectroscopy in order to ascertain sites three-dimensional pore network ZIF-90G. interaction ortho-positronium revealed that proceeded throughout preferential at aperture site. exothermic spontaneous was found be maximum pH ranging 3-4, predominantly following Langmuir isotherm pseudo-second-order rate kinetics. XPS spectra, appearance peaks ∼392.4 eV (U 4f5/2) ∼381.9 4f7/2) sorbed sample ∼344.01 (Th ∼334.81 evidenced effective sorption, while red shift O 1s spectrum (∼531.7 ∼534.4 ZIF-90G) indicated coordination metal ions through chelation carboxaldehyde functionalities. Elemental mapping scanning electron microscopy coupled energy dispersive X-ray also uniform Th(IV). Density functional theory absorption have been employed further molecular level.

Language: Английский

Citations

0