Pore structure and sorption characterization of titanosilicates obtained from concentrated precursors by the sol–gel method

Abstract

Our novel titanosilicate sol–gel synthesis yielded effective sorption materials for Sr2+ and Cs+ decontamination from polluted ground and waste water.

The titanium silicate influence on the Zn(II) and Sr(II) migration in the aquatic environment

“…Titanium silicate was synthesized in ISPE, NAS of Ukraine, with the technique described in [15]. For the synthesis of titanium silicates, a titanyl sulphate solution was used.…”

“…Chemical composition of the adsorbent was confirmed using XRF (Bruker AXS, Karlsruhe, Germany) and EDS (EVO 18 research) analysis (KINR, Kyiv, Ukraine). This adsorbent has a biporous structure, according to [15]. This fact is very useful, because zinc cation's adsorption is higher in micropores [10].…”

“…The stable isotopes of zinc and strontium were used in the form of SrCl 2 and ZnSO 4 . Initial and residual concentration of Zn 2+ and Sr 2+ were determined using direct complexonometric titration [15], and by XRF of the surface of titanium silicate as well.…”

“…Some scientific publications are devoted to investigations of adsorption of strontium and other heavy metals by adsorbents based on titanium compounds [8,10,14,15]. Among such compounds titanium silicate occupies a significant place.…”

“…Among such compounds titanium silicate occupies a significant place. The synthesis of titanium silicate uses the waste of titanium production industries [15,16], which is an advantage since titanium silicate has a dual environmental be-nefit. Titanium silicate exhibited high adsorption activity toward strontium ions [15,16] from distilled water and different solutions such as 0.1M HCl, and Ringer-Locke's solution.…”