A dicarboxylic acid Schiff base ligand was synthesized via condensation of 2-hydroxybenzaldehyde with 5-aminoisophthalic acid. The derived monomer was reacted with 4,4′-diaminodiphenyl ether and triphenyl phosphite (TPP) in tetrabutylammonium bromide (TBAB) molten ionic liquid as a green solvent to form an aromatic polyamide with a moderate yield (71%) and inherent viscosity (0.2 dL g−1). The nanostructured copper(II)/polyamide complex was then prepared. The structure, optical properties, and morphology of the compositions were confirmed by FT-IR, −1H-NMR, elemental analysis, UV-Vis, powder X-ray diffraction (XRD), thermogravimetric analysis (TGA) and field emission scanning electron microscopy (FE-SEM). The polyamide ligand and its nanostructured complex were comparatively applied in the elimination of Pb(II) ions from aqueous solutions.
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The authors appreciate Isfahan University of Technology (IUT) for partial financial support of this work.
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• The new PA containing Schiff base, was prepared in green solvent of TBAB.
• The synthesized PA was coordinated to Cu(II) ion to form metal polymer complex.
• The nanostructured PA ligand and its Cu(II) complex were comparatively applied to eliminate Pb(II) from water.
• The best adsorption was occurred at pH =6.
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Aghaei, M., Kianfar, A.H. & Dinari, M. Synthesis and characterization of a novel Schiff base polyamide ligand and its copper(II) complex for comparative removal of Pb(II) ions from aqueous solutions. J Polym Res 27, 54 (2020). https://doi.org/10.1007/s10965-020-2007-y
- Green chemistry
- Metal ion adsorption
- Nanostructure polyamide complex
- Schiff base polymer