The Adsorptive Ability of 3D Flower-Like Titanium Phosphate for U(VI) in Aqueous Solution

In the present work, 3D flower-like nanostructure titanium phosphates (F-TiP/T; T is the temperature of preparation in Celsius) were prepared through the reaction of tetrabutyl titanate (TBOT) with concentrated phosphoric acid. And F-TiP/T were applied to remove of U(VI). Furthermore, the effects of the preparation temperature, initial solution pH, and the kinetics and thermodynamics of U(VI) adsorbed by F-TiP/T were comprehensively explored. The characterization results of SEM and XRD indicated that the morphology of F-TiP/T was flower-like with a phase of Ti(HPO)•2HO. Moreover, the adsorption results indicated that the processes were fitting to pseudo-first-order and Sips models and the saturated adsorption capacity was recorded as 295.13 mg·g. The extraction of U(VI) on F-TiP/T was dominated by ion exchange. The results above indicate that F-TiP/T is a potentially efficient U(VI) adsorbent, which could be utilized in the removal and immobilization of U(VI) in wastewater.