Composite anion-exchangers modified with nanoparticles of hydrated oxides of multivalent metals

• Published in: Applied nanoscience Vol. 9; no. 5; pp. 997 - 1004
• Main Authors: Maltseva, T. V., Kolomiets, E. O., Dzyazko, Yu. S., Scherbakov, S.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.07.2019; Springer Nature B.V
• Subjects: Anion exchanging; Arsenates; Chemical reactions; Chemistry and Materials Science; Dilution; Ion exchange; Ion exchangers; Materials Science; Membrane Biology; Nanochemistry; Nanotechnology; Nanotechnology and Microengineering; Original Article; Ostwald ripening; Polymer matrix composites; Reagents; Sorption; Zirconium oxides; Sorption; Nanoparticles; Anion exchange resin; Zirconium oxide; Arsenic; Composite ion-exchanger
• ISSN: 2190-5509; 2190-5517
• DOI: 10.1007/s13204-018-0689-9

Organic–inorganic composite ion-exchangers based on anion exchange resins have been obtained. Particles of one-component and two-component modifier were embedded using the approach, which allows us to realize purposeful control of a size of the embedded particles. The approach is based on Ostwald–Freundlich equation, which was adapted to deposition in ion exchange matrix. The equation was obtained experimentally. Hydrated oxides of zirconium and iron were applied to modification, concentration of the reagents were varied. The embedded particles accelerate sorption, the rate of which is fitted by the model equation of chemical reactions of pseudo-second order. When sorption of arsenate ions from very diluted solution (50 µg dm −3 ) occurs, the composites show higher distribution coefficients comparing with the pristine resin.