An imidazole functionalized porous organic polymer for the highly efficient extraction of uranium from aqueous solutions

Abstract

With the development of nuclear power, extraction of uranium from aqueous solutions using imidazole functionalized sorbents is extremely important for environmental protection and sustainable development of atomic power, since imidazole...

Synthesis of a Novel Spherical-Shell-Structure Polymerized Ionic Liquid Microsphere PILM/Au/Al(OH)3 Catalyst for Benzyl Alcohol Oxidation

“…For PILM/Au/Al(OH) 3 microspheres, the XPS signals at 74.9 and 532.2 eV were attributed to Al 2p and O 1s, respectively. 33 The Al 2p and O 1s peaks appear in the PILM/ Au/Al(OH) 3 microspheres, indicating that the surface of the microspheres is enriched in Al(OH) 3 . The fitting spectrum of Au 4f is shown in Figure 3d.…”

“…Figure S5d shows two characteristic peaks at 399.8 and 400.2 eV appearing on N 1s, which correspond to C–N and CN in the imidazole ring, respectively. For PILM/Au/Al­(OH) 3 microspheres, the XPS signals at 74.9 and 532.2 eV were attributed to Al 2p and O 1s, respectively . The Al 2p and O 1s peaks appear in the PILM/Au/Al­(OH) 3 microspheres, indicating that the surface of the microspheres is enriched in Al­(OH) 3 .…”

Protocol for extraction, characterization, and computational analysis of uranium from seawater

“…This initiated early work on adsorbent technologies involving inorganic materials, like Mg-Al bimetallic oxides (Mg/Al-BOs), 3 amidoximated silver-silica core-shell nanoparticle (Ag@SiO 2 -AO), 4 magnetic nanoparticles, 5 mesoporous silica materials. 6 The developmental stage of UES is dominated by oxime functionalized materials, i.e., polymeric materials (OxF), 7 porous organic polymers (POPs), 8 porous aromatic frameworks (PAFs), 8 synthetic organic polymers, 9 biopolymers, 10 porous carbonaceous adsorbents, 11 ionic liquids, 12 graphene oxides, 13 grafted fibers 14 etc.…”

Removal of Uranium from Aqueous Solution and Simulated Seawater Using a Mixed Matrix Membrane Fabricated by Cyclophosphazene and Triazine-Based Inorganic–Organic Hybrid Material

“…Uranium most commonly exhibits U­(III), U­(IV), U­(V), and U­(VI) oxidation states, among which U­(VI) is most abundant in the aqueous environment. − The chemistry of uranium in an aqueous solution is quite interesting. Below pH of 4, the dominant species is UO 2 2+ , and pH of above 7, it can easily combine with OH – and CO 3 2– to form different ionic and neutral species such as [UO 2 CO 3 ], [(UO 2 ) 2 CO 3 (OH) 3 ], [UO 2 (OH) 2 ], [UO 2 (OH)] + , [UO 2 (OH) 4 ] 2– , [UO 2 (CO 3 ) 2 ] 2– , [UO 2 (OH) 3 ] − , [UO 2 (CO 3 ) 3 ] 4– , and [(UO 2 ) 3 (OH) 7 ] − . , Within the pH range of 5–7, the most dominating form of uranium present in the aqueous solution is the cationic species [(UO 2 ) 3 (OH) 5 ] + . − The hexavalent uranium U­(VI) is considered as the most commonly available species found in the aqueous solution. Due to its high water solubility, toxicity, and radioactive nature, it reduces the viability of cells and is considered as carcinogenic.…”