title: Synthesis and characterization of a chitosan-bearing binucleating ligand and its pH dependency on copper(II) adsorption.
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.
authors.affiliation: Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: K R
authors.initials: KR
authors.lastname: Krishnapriya
authors.forename: M
authors.initials: M
authors.lastname: Kandaswamy
mesh_terms: D000327:Adsorption; D002413:Cations, Divalent; D002614:Chelating Agents / Q000138:chemical synthesis*; D048271:Chitosan / Q000031:analogs & derivatives / Q000138:chemical synthesis*; D003300:Copper / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D006863:Hydrogen-Ion Concentration; D008024:Ligands; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D002413:Cations, Divalent; D002614:Chelating Agents; D008024:Ligands; D003300:Copper; D048271:Chitosan