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Updated: Jul 2, 2026

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Synthesis and characterization of a chitosan-bearing binucleating ligand and its pH dependency on copper(II)
K R Krishnapriya1, M Kandaswamy
1Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
Abstract:
A novel chitosan derivative has been synthesized by the condensation of a binucleating ligand, 2,6-bis[(N-methylpiperazine-1-yl)methyl]-4-formylphenol (BNL), with chitosan (CTS). The resulting material (CTS-BNL) was characterized and its adsorption properties towards copper(II) ions in aqueous solutions of various pH have been studied, the adsorption capacity (Q(e)) is about 0.94 mmol g(-1) at pH 6 and 1.45 mmol g(-1) at pH 8.5. This higher adsorption capacity may be due to the binucleating ligand anchored to chitosan.
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