N, N-bis (2-hydroxyethyl) malonamide based amidoxime functionalized polymer immobilized in biomembranes for highly selective adsorption of uranium(VI)

Efficient Separation of Uranium(VI) by CaCO3-Doped Chitosan with PO43– Modification: Adsorption Behaviors and Mechanism Study

“…The fitting curves and relevant parameters of the adsorption kinetic models are displayed in Figures a and S5 and Table , respectively. Obviously, the correlation coefficient ( R 2 ) of the pseudo-second-order kinetic model was higher than the other kinetic model and the calculation value of q e from the pseudo-second-order kinetic model was closer to the experimental data, which indicated that the pseudo-second-order kinetic model could more accurately describe the adsorption behavior of CaCO 3 @aCS/PA for uranium, namely, uranium species were captured using CaCO 3 @aCS/PA from solution by the chemical process. , Furthermore, the pseudo-second-order kinetic model was used to calculate the adsorption rate of CaCO 3 @aCS/PA for uranium at different adsorption times. As depicted in Figure b, the adsorption rate weakened significantly with the increase in the adsorption time, which was caused by the considerable drop in the uranium concentration in solution.…”

One-pot synthesis of a graphene oxide-supported TixAl1−xOy-based material modified with amidoxime for highly efficient uranium(vi) adsorption

“…In the case of AO-GTA–U, C–NH 2 and CN–OH shifted to lower binding energies, indicating that the formation of stable compounds between uranium and C–NH 2 /CN–OH. 48 Furthermore, the peak areas of CN–OH and Ti/Al–OH decreased from 11.61% and 29.13% to 7.36% and 26.90% respectively (Fig. S7†), demonstrating that CN–OH and Ti/Al–OH were involved in the uranium capture mechanism.…”

Exploring Electron Transfer Mechanism in Synergistic Interactional Reduced Polyoxometalate-Based Cu(I)–Organic Framework for Photocatalytic Removal of U(VI)

“…The dual crisis of greenhouse effect and energy shortage has propelled people to develop new and sustainable energy sources to alleviate world energy problems. , Nuclear energy, as an efficient and sustainable new energy source, has great potential to displace conventional fossil fuels owing to its inherent merits of high power density, low carbon emissions, and low power generation costs. − Uranium, which is radioactive and chemically toxic, is an important component of nuclear fuel. , Massive uranium-containing wastewater will be generated in uranium mining, smelting, conversion and enrichment as well as nuclear fuel fabrication and nuclear waste disposal. − Uranium exists as a form of dissolved UO 2 2+ in the uranium-containing wastewater, which possesses a strong migration capacity . If it enters the natural environment through natural infiltration and water migration, it will cause serious harm to the ecosystem and human health.…”

“…3−6 Uranium, which is radioactive and chemically toxic, is an important component of nuclear fuel. 7,8 Massive uranium-containing wastewater will be generated in uranium mining, smelting, conversion and enrichment as well as nuclear fuel fabrication and nuclear waste disposal. 9−11 Uranium exists as a form of dissolved UO 2 2+ in the uranium-containing wastewater, which possesses a strong migration capacity.…”