Novel Cu (II) magnetic ion imprinted materials prepared by surface imprinted technique combined with a sol-gel process

J Hazard Mater. 2011 Sep 15;192(3):949-55. doi: 10.1016/j.jhazmat.2011.05.042. Epub 2011 Jul 7.

Abstract

A novel Cu (II) magnetic ion-imprinted polymer (MIIP) was synthesized by surface imprinting technique combined with a sol-gel process. The adsorbent of Cu (II)-MIIP shows higher capacity and selectivity than that of magnetic non-imprinted polymers (MNIP). Adsorption capacities of Cu (II)-MIIP and MNIP are 24.2 and 5.2mg/g for Cu (II) ions, respectively. The selectivity coefficients of the Cu (II)-MIIP for Cu (II)/Zn (II) and Cu (II)/Ni (II) are 91.84 and 133.92, respectively. Kinetics studies show that the adsorption process obeys pseudo-second-order rate mechanism with an initial adsorption rate of 132.48 for Cu (II)-MIIP and 2.41mgg(-1)min(-1) for MNIP. In addition, no obvious decrease was observed after up to five adsorption cycles, indicating that the Cu (II)-MIIP is of high stability.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Chemistry / methods*
  • Copper / chemistry*
  • Ions*
  • Kinetics
  • Magnetics
  • Models, Chemical
  • Phase Transition
  • Polymers / chemistry
  • Surface Properties
  • Time Factors
  • X-Ray Diffraction
  • Zinc / chemistry

Substances

  • Ions
  • Polymers
  • Copper
  • Zinc