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Vol. 29 No. 6 (2017): Vol 29 Issue 6

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Synthesis and Characterization of Ion-Imprinted Polymer for Selective Adsorption of Zinc Ions in Aqueous media

https://doi.org/10.14233/ajchem.2017.20440
G. Zuhra Memon
Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro-76080, Pakistan
Sumera Sarwar
Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro-76080, Pakistan
F. Memon
Department of Physiology, University of Sindh, Jamshoro-76080, Pakistan
Muhammad Qasim Samejo
Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro-76080, Pakistan
A.G.M. Vasandani
Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro-76080, Pakistan

Corresponding Author(s) : G. Zuhra Memon

zuhramemon_chem@yahoo.com

Asian Journal of Chemistry, Vol. 29 No. 6 (2017): Vol 29 Issue 6

Abstract

In this study, a new zinc(II) ion imprinted polymer [Zn(II)-IIP] was synthesized by radical polymerization using using Zn(NO3)2, 4-vinylpyridine (4-VP), ethylene glycol dimethacrylate (EGDMA) and benzoyl peroxide (BPO) as the template ion, functional monomer, cross-linking agent and initiator, respectively. The prepared materials (imprinted polymers + non-imprinted polymer) were then characterized using Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). These characterization methods confirmed the difference between ion imprinted polymers (IIP) and non-imprinted polymers (NIP). The imprinted Zn(II) ions were completely removed from polymer by leaching with 0.1 M HCl. The adsorption parameters such as contact time, initial concentration shaking speed and pH have been studied. Adsorption was found to be repaid within 40 min and maximum % adsorption was observed at pH 8. The Fruendlich, Langmuir and D-R models were used to study the partitioning behaviour of the adsorption systems. Using kinetics models 1st order rate constant (k) and Rd (intra particle rate constant) have been calculated. Some thermodynamical parameters i.e., studies DH, DG and DS have been calculated.

Keywords

Zinc(II) Ion-imprinted polymer 4-Vinylpyridine Selective adsorption
Memon, G. Z., Sarwar, S., Memon, F., Samejo, M. Q., & Vasandani, A. (2017). Synthesis and Characterization of Ion-Imprinted Polymer for Selective Adsorption of Zinc Ions in Aqueous media. Asian Journal of Chemistry, 29(6), 1229–1234. https://doi.org/10.14233/ajchem.2017.20440
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