Synthesis and adsorption characteristics of ionic imprinted polymers IIPs for removal and preconcentration of Nickel from aqueous solution

Document Type : Original Article

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Department of Chemistry, College of Sciences, University of Baghdad, Baghdad, Iraq.

Abstract

A novel Ni(II) ion-imprinted polymers (IIPs) was synthesized by bulk polymerization using different types of monomers such as Styrene and 1-vinyl imidazole, respectively. molar ratios of template, monomer and cross-linking agent for polymerization, solvents, Various monomers were studied to obtain the largest adsorption capacity. The prepared Nickel-IIPs were characterized using fourier-transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The elution process has no influence on the three-dimension network structure surfaces of Nickel-IIPs. Nickel(II) ions could be eluted from IIPs successfully by mixture solution from ethanol and acetic acid. The maximum adsorption capacity of Nickel-IIPs was is 457.3µmol/g for Nickel-IIP1(using styrene as a monomer) and 355µmol/g for Nickel-IIP2(using 1-vinyl imidazole as a monomer). The adsorption by Nickel-IIPs followed a Langmuir isotherm models. Solid-phase extraction (SPE) syringe packed with ionic imprinted polymers (IIPs) were used to selective separation and preconcentration for Nickel(II) ion from aqueous solutions and digest the polymer to determination the Nickel by flame atomic absorption spectroscopy (AAS) Abbreviation IIP-SPE-FAAS

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History

  • Receive Date: 05 June 2021
  • Revise Date: 16 June 2021
  • Accept Date: 21 June 2021

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