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Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media
Author(s) -
Elshehy Emad A.
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202100004
Subject(s) - sorbent , uranyl , mesoporous material , mesoporous silica , adsorption , scanning electron microscope , desorption , aqueous solution , chemistry , fourier transform infrared spectroscopy , inorganic chemistry , transmission electron microscopy , materials science , nuclear chemistry , chemical engineering , analytical chemistry (journal) , ion , chromatography , nanotechnology , catalysis , organic chemistry , engineering , composite material
The synthesis of mesoporous silica monoliths‐based phosphonate groups (SiO 2 ‐DPTS) through immobilization of diethylphosphatoethyltriethoxysilane using the post‐grafting approach to be applied as a sensitive sorbent for selective separation of U(IV) ions from aqueous solutions is described. The designed SiO 2 ‐DPTS sorbent was characterized by Fourier transform infrared, scanning electron and high‐resolution transmission electron microscopy, scanning transmission electron microscopy/energy‐dispersive X‐ray spectroscopy, N 2 adsorption‐desorption, and elemental analysis. The adsorption process was studied under different experimental conditions of pH, concentration, and time. The mechanism of interaction of SiO 2 ‐DPTS with U(VI) ions was explored and supported by density functional theory (DFT) calculations. This synthesized sorbent allows highly efficient extraction of U(IV) ions from uranyl leach liquor.