Application of Rh(III)-Metalloporphyrin Grafted Fe۳O۴ Nanoparticles for the Extraction of Thiocyanate Ions from Aqueous Solutions

A new sorbent composed of ۳-aminopropyltriethoxy-silane-coated magnetic nanoparticles, functionalized with rhodium(III) porphyrin complex was synthesized and characterized by elemental analysis, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FT-IR) and ThermoGravimetric Analysis (TGA). The effect of some co-existing anions present in aqueous solutions, pH, sorbent dosage and contact time on the thiocyanate removal was investigated. Thiocyanate adsorbing material was regenerated with ۱۵ mM NaOH up to ۹۷.۰ %. The effectiveness and feasibility of the proposed sorbent for removal of thiocyanate ions from aqueous solutions is proved.

کلیدواژه ها:

Metalloporphyrin ، Magnetite ، Surface modification ، Thiocyanate ion ، Water samples