High-efficiency removal of U(VI) by mesoporous carbon functionalized with amino group

Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review

“…The selectivity of the adsorbent is another significant parameter. The selectivity of MC-NH 2 in the presence of other competing ions (Mg 2+ , Zn 2+ , Mn 2+ , Cu 2+ , Ni 2+ , Sr 2+ , and Hg 2+ ) was analyzed, and the results in Figure show higher uranium adsorption and that other metal ion adsorption was negligible …”

“… 201 The process involves nitration and reduction steps, but before the functionalization, the tough step is the template removal using concentrated acids which might destroy the porous structure of the MC. Recently, Wang and co-workers 202 introduced the amino group in MC without template-removing methods for the adsorption of uranium from seawater. Characterization was employed to check the adsorbent functionalization, and various studies were performed to analyze the uranium adsorption performance.…”

“… Influence of competing ions on uranium adsorption of NH 2 -MC. Reproduced with permission from ref ( 202 ). Copyright 2021 Springer Nature.…”

Tuning the heterostructure of Zn–Fe–O nanoparticles for highly efficient photocatalytic removal of U(vi) under different light intensities

“…With the increasing global energy demand and growing concerns for environmental protection, there is a need to develop alternative clean energy sources. [1][2][3][4] Nuclear energy is considered as one of these alternatives due to its environmental friendliness and high energy output. However, the use of nuclear energy generates large amounts of wastewater containing hexavalent uranium, which poses significant environmental and biological hazards.…”

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

“…At present, many technical means have been developed to recover uranium, including ion exchange, adsorption, − chemical precipitation, and membrane separation, among which adsorption is considered the most promising method. To date, various materials with high specific surface area or porous structures have been employed as adsorbents for uranium recovery, such as carbon materials (graphene oxide, carbon nanotubes, and mesoporous carbon), polymer materials (resins and chitosan), and porous frame materials (metal–organic frameworks , and covalent organic frameworks). , In view of the low uranyl ion content and complicated ionic environment of nuclear wastewater, the adsorbents need to possess good selectivity, stability, high adsorption capacity, and high removal percentage at low concentrations. More importantly, the adsorbent can be packed into a fixed-bed column for use as in actual wastewater treatment.…”