Polymer-clay nanocomposite iron traps based on intersurface ion-imprinting

Karaboerk M., ERSÖZ A., DENİZLİ A., Say R.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol.47, no.7, pp.2258-2264, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 7
  • Publication Date: 2008
  • Doi Number: 10.1021/ie070885o
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2258-2264
  • Anadolu University Affiliated: Yes


We combined the ion-imprinting technique and the binding ability of Fe3+ ions to organosmectite to create the inorgano-organo Fe3+ ions imprinted polymer-nanocomposite traps with the goal of preparing a solid phase that has high selectivity for Fe3+ ions. In the first step, the intercalation of quartamine cations was conducted by an ion-exchange process between the smectite host and an aqueous quartamine solution and Fe3+ ions were complexed with methacryloylamidoantipyrine (MAAP). In the second step, quartamine cations were exchanged with a preorganized metal-chelate complex monomer for the preparation of polymer nanocomposite traps based on the intersurface ion-imprinting. After that, the template ions (i.e., Fe3+) were removed using 4.0 M HNO3 solution. Fe3+-imprinted nanocomposites were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), swelling studies, and elemental analysis. Maximum binding capacity, optimum pH, and equilibrium binding time were found to be 78.5 mg/g, pH 3.0, and 10 min, respectively. The relative selectivity coefficients of the imprinted nanocomposite traps for Fe3+/Al3+, Fe3+/CU2+, Fe3+/ Co2+, and Fe3+/Zn2+ were 5.28, 11.4, 15.8, and 72.6 times greater than the nonimprinted nanocomposites, respectively. The Fe3+-imprinted nanocomposite traps could be used many times without decreasing in their adsorption capacities significantly.