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Keywords:

  • polystyrene-supported glucosamine;
  • adsorption;
  • Au(III)

Abstract

A novel chelating resin, crosslinking polystyrene-supported glucosamine (PS-GA), was prepared and its structure was confirmed by FTIR, elemental analysis, and X-ray photoelectron spectroscopy. The adsorption properties of PS-GA for Au(III) were investigated. PS-GA resin possessed excellent enriching property to Au(III) ions and adsorption proportion E% could reach to about 90 shortly after 3 h. The adsorption dynamics of Au(III) showed that the adsorption was controlled by liquid film diffusion and the apparent activation energy Ea was 12.91 kJ mol−1. Both Langmuir model and Freundlich model could describe the isothermal process of Au(III), and ΔG, ΔH, ΔS values were calculated. The mechanism of adsorption for Au(III) was confirmed by FTIR, SEM, and XPS. The results showed that redox reaction occurred and both coordination and ion-exchange existed simultaneously in the adsorption. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4581–4586, 2006