Pentacyanoferrate(II) complexes with chitosan

• Published in: Polymer engineering and science 2014-10, Vol.54 (10), p.2392-2397
• Main Authors: Bratskaya, S. Yu, Privar, Yu. O., Korjakova, O.V., Mechaev, A.V., Pestov, A.V.
• Format: Article
• Language: English
• Subjects: Chemical engineering; Chemical engineering research; Chemical properties; Chemical reactions; Chitin; Chitosan; Diffraction; Fourier transforms; Identification and classification; Infrared; Iron compounds; Isotherms; Ligands; Sodium; Sorption; Thermogravimetric analysis
• ISSN: 0032-3888; 1548-2634
• DOI: 10.1002/pen.23787

New organic–inorganic materials based on products of interaction between sodium aminoprusside and polymer ligand (chitosan) have been synthesized. The composition of the obtained materials was characterized using the element analysis and X‐ray diffraction; the Fourier transform infrared (FT‐IR) spectroscopy and Thermogravimetric analysis data were used to propose the structure of the formed complexes. It was established that ion and ligand exchange were the main reactions at interaction of sodium aminoprusside with water‐soluble chitosan salts. The comparative estimation of the sorption capacity with respect to cesium ions was performed for the synthesized complexes. It has been shown that the complex of chitosan with pentacyanoferrate(II) in the form of cobalt(II) salt has higher distribution coefficient with respect to Cs+ ions, as compared to cobalt aminoprusside. The maximum sorption capacity value for Cs+ was evaluated from the sorption isotherm and found to be equal to 0.3 mmol/g. POLYM. ENG. SCI., 54:2392–2397, 2014. © 2013 Society of Plastics Engineers