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

摘要

Macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimetha-crylate), 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 taster 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.