Magnetic nanoparticles coated with aminated polymer brush as a novel material for effective removal of Pb(II) ions from aqueous environments
作者： Şakir Yılmaz , Adem Zengin , Yeliz Akbulut , Tekin Şahan
DOI: 10.1007/S11356-019-05360-2
关键词: Polymer brush 、 Adsorption 、 Langmuir 、 Central composite design 、 Nuclear chemistry 、 Aqueous solution 、 Chain transfer 、 Polymerization 、 Freundlich equation 、 Materials science
摘要: In the present study, a poly (vinylbenzyl chloride) grafted Fe3O4 nanoparticle (Fe3O4@PVBC) was prepared by surface-initiated reversible addition fragmentation chain transfer (SI-RAFT) polymerization and subsequently coated with tris (aminoethyl) amine (TAEA). Then, Fe3O4@PVBC-TAEA nanoparticles were utilized as novel adsorbent for removal of Pb(II) from aqueous media optimal adsorption conditions determined response surface methodology (RSM). The used characterized using X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM). RSM central composite design (CCD) carried out to evaluate effect initial pH, concentration (C0, mg/L), dosage (mg), contact time (min). optimum C0, dosage, found be 5.88, 46.51 mg/L, 17.41 mg, 108.21 min, respectively. maximum efficiency capacity 97.07% 129.65 mg/g under these conditions, kinetic data revealed that mechanism could best explained pseudo-second-order Weber-Morris models. isotherm studies both Langmuir Freundlich models fitted experimental well. thermodynamic analysis indicated nature is exothermic, applicable, spontaneous.
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