Preparation of chromium (III) ion-imprinted polymer based on azo dye functionalized chitosan

The main aim of this work is the preparation of azo dye modified chitosan that was subsequently used in the ion-imprinting of Cr(III) ions to finally obtain ion-selective sorbent able to selectively combine with Cr(III) ions from water when coexisting with other similar metal ions. The azo dye deriv...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate polymers 2022-05, Vol.284, p.119139-119139, Article 119139
Main Authors: Elsayed, Nadia H., Monier, M., Alatawi, Raedah A.S., Albalawi, Marzough A., Alhawiti, Aliyah S.
Format: Article
Language:English
Subjects:
Azo dye
Chitosan
Chromium(III) ions
Ion-imprinting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The main aim of this work is the preparation of azo dye modified chitosan that was subsequently used in the ion-imprinting of Cr(III) ions to finally obtain ion-selective sorbent able to selectively combine with Cr(III) ions from water when coexisting with other similar metal ions. The azo dye derived from resorcinol and p-aminobenzoic acid was prepared and then linked to the chitosan amino groups by amide linkages utilizing EDC/NHS coupling agent. A polymeric complex of the azo dye chitosan derivative AZCS and Cr(III) ions was then prepared and treated with glyoxal solution, which cross-link the main chitosan chains in form of micro-spherical beads in presence of the coordinated Cr(III) ions that were later expelled out of the texture of the beads using acidified EDTA eluent solution while preserving the spatial and geometrical shape of the resulting Cr(III) ions chelating sites. [Display omitted]
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2022.119139