Cesium uptake by pentacyanoferrate(II) complexes with O-containing derivatives of chitosan

ABSTRACT

Here we report on synthesis of new organic-inorganic materials based on products of interaction between sodium aminoprusside and polymer ligands. Fourier transform infrared (FT-IR) and UV-visible spectroscopy and thermogravimetry were used to investigate the structure and stability of the complexes. It was found that ion and ligand exchange were the main reactions of the interaction of sodium aminoprusside with water-soluble polymer salts. All other composites in the Co(II) form were characterized in terms of sorption capacities and distribution coefficients (K_d) for cesium ions. The highest values of distribution coefficients were obtained for polyampholyte chitosan derivatives.

KEYWORDS:

• Cesium
• chitosan
• complexes

Additional information

Funding

The authors gratefully acknowledge financial support for the synthesis of chitosan derivatives and their complexes from Russian Scientific Foundation (project № 14-13-00136). Sorption properties of the materials were investigated within the frames of Government State Assignment № 0265-2014-0001 (Institute of Chemistry FEBRAS).