Amidoximated poly(vinyl imidazole)-functionalized molybdenum disulfide sheets for efficient sorption of a uranyl tricarbonate complex from aqueous solutions. Issue 18 (9th February 2017) - Shen, Liang
Abstract : A new method is developed for effective uranium(vi ) sorption from aqueous solution through amidoximated poly(vinyl imidazole)-functionalized MoS2 sheets. Abstract : It is of strategic importance to capture uranium(vi ) from aqueous solutions from the points of environment and energy. A new method is reported herein for efficient uranium(vi ) capture from aqueous solutions by amidoximated poly(vinyl imidazole)-functionalized MoS2 sheets. Specifically, the sorbent is prepared by grafting amidoximated poly(vinyl imidazole) onto MoS2 -sheets through covalent bonds. The sorption follows pseudo-second-order kinetics and the equilibrium can be reached within 30 s. There is a large sorption capacity of 348.4 mg g −1 at pH 8.0 and 298.15 K. The sorbent shows good selectivity towards uranium(vi ) over the coexisting ions in comparison with bare MoS2 -sheets. In addition, the sorbent exhibits remarkable salt-resistant stability and can be regenerated efficiently after five cycles with high cycle efficiency. To the best of our knowledge, this is the first report on MoS2 sheets for uranium(vi ) sorption with high efficiency from aqueous solution.