Novel β-Cyclodextrin Functionalized Core-Shell Fe3O4 Magnetic Nanoparticles for the Removal of Toxic Metals from Water

Herein we report the synthesis and characterization of β-CD functionalized core-shell Fe3O4 magnetic nanoparticles which were used as an adsorbent for removal of Lead (II) and Copper (II) ions from aqueous solution. Various characterization techniques including FTIR, TGA analysis, SEM, TEM, X-Ray diffraction patterns (XRD) and nitrogen adsorption- desorption measurements were employed to investigate the properties of the synthesized material. The influence of pH, contact time, metal ion concentration, adsorbent dosage of Lead (II) and Copper (II) ion removal were also studied. The isotherm models for both ions showed a fit to the Langmuir model. Thermodynamic parameters such as enthalpy, entropy and Gibbs free energy were also evaluated and the negative values of ΔH for both Lead (II) and Copper (II) ions indicated the exothermic nature their sorption.