Noble metals binding on macroporous poly(GMA-co-EGDMA) modified with ethylenediamine

Abstract

Macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate), p(GME), was synthesized by suspension copolymerization and modified by reaction of the pendant epoxy groups with ethylenediamine. The sorption rate and capacity of the modified copolymer, p(GME)-en for Rh(III), Au(III) and Pt(IV) ions were determined in batch experiments under non-competitive conditions. The uptake of Rh(III) was faster than those of Au(III) and Pt(IV). The sorption capacity for Pt(IV) was determined in the pH range 0.9–6.0. The maximum Pt(IV) uptake capacity onto p(GME)-en at pH 5.5 was 1.30 mmol/g.

Keywords

• macroporous copolymers
• modification
• sorption
• noble metals