Noble metal 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 themodified 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 ofAu(III) and Pt(IV). The sorption capacity for Pt(IV)was determined in the pHrange 0.9–6.0. The maximum Pt(IV) uptake capacity onto p(GME)-en at pH 5.5 was 1.30 mmol/g.

Umreženi makroporozni poli(glicidilmetakrilat-ko-etilenglikoldimetakrilat) sintetizovan je suspenzionom kopolimerizacijom i modifikovan reakcijom bočnih epoksidnih grupa sa etilendiaminom. Brzina sorpcije i kapacitet modifikovanog kopolimera, poli(GME)-en, za sorpciju Rh(III), Au(III) i Pt(IV) jona određeni su šaržnim eksperimentima pri nekompetitivnim uslovima. Utvrđeno je da je sorpcija Rh(III) jona na poli(GME)-en brža od sorpcije Au(III) i Pt(IV) jona. Kapacitet sorpcije Pt(IV) jona određen je u opsegu pH 0,9 – 6,0. Maksimalna količina Pt(IV) jona vezanih za p(GME)-en pri pH 5,5 iznosi 1,30 mmol/g.