Effect of Modification of Titanium Phosphate by Hydrothermal, Microwave, and Mechanochemical Treatment on the Sorption of Cs, Sr, and U(VI) Ions

The relationship between the crystal and porous structure of titanium phosphate modified by hydrothermal, microwave, and mechanochemical treatment and its sorption characteristics with respect to Cs, Sr, and U(VI) ions was investigated. It was established that increase of the content of hydrophosphate phase, specific surface area, and volume and size of mesopores increases the sorption capacity and distribution coefficient. It was shown that the sorption is accelerated by increase of the volume of the macropores.