Spectral study of fluorone dyes adsorption on chitosan-based polyelectrolyte complexes | Научно-инновационный портал СФУ

Spectral study of fluorone dyes adsorption on chitosan-based polyelectrolyte complexes

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1016/j.jcis.2013.11.016

Ключевые слова: Fluorescein, Eosin Y, Erythrosin B, Chitosan, Chondroitin sulfate, Hyaluronate, Polyelectrolyte complex, Absorption spectra, Adsorption, Langmuir-Freundlich isotherm, Chondroitin sulfates, Langmuir-Freundlich isotherms, Polyelectrolyte complexes, Adsorption isotherms, Hyaluronic acid, Polyelectrolytes, Spectroscopic analysis, Synthesis (chemical), dye, eosin, erythrosine, fluorone dye, polyelectrolyte, unclassified drug, absorption spectroscopy, article, hydrophobicity, phosphorescence, priority journal, room temperature, surface property, Eosine Yellowish-(YS), Fluorescent Dyes, Hydrogen-Ion Concentration, Hydrophobic and Hydrophilic Interactions, Kinetics, Light, Scattering, Radiation, Solutions, Spectrophotometry, Temperature, Thermodynamics, Water

Аннотация: Polyelectrolyte complexes of the chitosan-chondroitin sulfate and chitosan-hyaluronate polycation-polyanion pairs were synthesized and characterized as potential dye adsorbents at different pH levels. Equilibrium isotherm analysis was applied to investigate the efficiency and the mechanism of the adsorption of fluorone dyes (fluorescein, eosin Y, erythrosin B) on the synthesized complexes. The inefficiency of the fluorescein adsorption was proved by two different quantitative spectroscopic methods. The adsorption isotherm for both eosin Y and erythrosin B was adequately described in terms of the Langmuir-Freundlich model. The observed room-temperature phosphorescence of the adsorbed erythrosin B was attributed to the surface inhomogeneity of the synthesized complexes. The revealed variation in the adsorption properties of fluorone dyes was related to the differences in their ionic forms as well as in their polarity and hydrophobicity. (C) 2013 Elsevier Inc. All rights reserved.

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Выпуск журнала: Vol. 417

Номера страниц: 80-87

ISSN журнала: 00219797

Место издания: SAN DIEGO



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