In a paper to be published in the forthcoming issue in NANO, researchers from China have proposed a way to reduce Uranium concentration in contaminated water.
Mesoporous SBA-15 with ordered mesostructures, high surface areas and large pore sizes have been applied to concentrate U(VI) from aqueous solutions.
However, the comprehensive evaluation of structure-composition-function relationships, including the interconnected influence of textural characteristics of sorbents and the interaction mechanism of U(VI)-surface modified chemical groups, has not been fully studied yet.
This paper investigates how the synergistic integration of pore mesochannels and surface functionalization of SBA-15 enables high-performance U(VI) sorption.
The results show that the mesostructures including morphologies and pore length of SBA-15 perform the dominant function for the fast sorption kinetics (10 min for plates, 20 min for rods), while the modified amidoxime groups make excellent U(VI) sorption capacities (646.2 mg/g for plates, 499.8 mg/g for rods at pH 5.0 and T 298.15 K) and high selectivity possible.
This work was supported by CAS Pioneer Hundred Talents Program, the CASHIPS Director's Fund (No.