Incorporation of magnetism into the dihydroimidazole functionalized mesoporous silica for convenient U(VI) capture

CeO2–TiFe2O4 nanocomposite for effective removal of uranium ions from aqueous waste solutions

“…As a consequence of uranium adsorption onto nanocomposite surface, a new band was appeared at 880 cm −1 which may be attributed to antisymmetric stretching vibration of O=U=O bands, confirming a successful U(VI) sorption as uranyl ions or uranyl complexes [37].The lack of the strong peak at 1380 and 1530 cm −1 for CTF nanoadsorbent after loading with U(VI) clearly indicates that no nitrate ions as counter ions or chelating agent was co-sorbed with U(VI) [38]. In such case, the U(VI) ions were probably sorbed in hydroxide complex form or positive charge species by cation-exchange mode [38]. Also, the nanocomposite charateristic bands were slightly shifted and become less intense after uranium adsorption onto CTF nanocomposite, Fig.…”

Flow-enhanced kinetics of uranyl (UO2) transport into nano-porous silica gel

“…Study of equilibrium capacity has focused on maximizing the capacity for removing ions from aqueous solutions [17][18][19][20]. The maximization of the equilibrium capacity was achieved by adding functional groups to the surface of the silica gel particles [17,[19][20][21][22]. The kinetics has been studied for various solutions and with different methods such as in a static or stirred fluid [15].…”