Study on adsorption of U(VI) from MOF-derived phosphorylated porous carbons

Direct phosphorylation of a pyridine-functionalized porous organic polymer for efficient uranium capture

“…2a) peak at 1603 cm −1 confirms the formation of olefin linkage resulting from the Knoevenagel condensation reaction. The carbon atoms in the skeleton of the POP are confirmed using the 13 C solid-state nuclear magnetic resonance (NMR) spectrum (Fig. 2b).…”

“…Phosphorylation has often been employed to modify POPs to achieve an efficient uranyl uptake 10–13 due to the good affinity of phosphorus for uranyl ions. 14–17 For example, Sun et al used the “click” reaction to decorate SBA-15 with a phosphonic acid group, showing fast adsorption kinetics towards uranyl ions within four minutes.…”

“…Porous organic polymers (POPs), connected by stable covalent bonds, are promising materials for capturing radioactive elements. 8,9 Phosphorylation has often been employed to modify POPs to achieve an efficient uranyl uptake [10][11][12][13] due to the good affinity of phosphorus for uranyl ions. [14][15][16][17] For example, Sun et al used the "click" reaction to decorate SBA-15 with a phosphonic acid group, showing fast adsorption kinetics towards uranyl ions within four minutes.…”

Ion-imprinted guanidine-functionalized zeolite molecular sieves enhance the adsorption selectivity and antibacterial properties for uranium extraction

“…The peak at 1045 cm À1 , 1147 cm À1 and 1249 cm À1 are P-O and P]O stretching vibration peaks in phosphonic acid group. 35,36 In summary, the IIZMS-G adsorbent had been successfully prepared.…”

Simple one-pot synthesis of manganese dioxide modified bamboo-derived biochar composites for uranium(vi) removal

“…These methods are mainly evaporation, chemical precipitation, ion exchange, adsorption, membrane separation, etc. [8][9][10][11][12][13][14] Among them, adsorption technology has the advantages of being more suitable for low concentration targets, 15 economical and efficient, and feasible to operate. [16][17][18] It is often regarded as one of the excellent separation technologies for the removal of U(VI) in aqueous systems.…”