Abstract
Magnetic nano structured materials provide new functionalities not found in their individual nano components. Removal and recovery of Cd(II) from aqueous solution was investigated using SiO2@Fe3O4-SB nano-hybrid materials. To enhance the potential of adsorbent material, we explored a new type Schiff’s base functionalized silica coated iron-oxide nano-hybrids (SiO2@Fe3O4-SB). The combination of both adsorption and magnetic separation properties were employed selectively for removal and recovery of Cd(II) from water and wastewater samples. Effect of different parameters influencing adsorption of Cd(II) for instance; interference of distinct cations and anions, effect of pH, concentration and volume of eluent, amount of adsorbent and ultra-sonication time were appraised and examined. The adsorbed Cd(II) was then desorbed and determined spectrophotometrically. The synthesized material was characterized with UV–vis spectroscopy, XRD, FTIR and TEM. The Limit of Detection under optimized conditions for Cd (II) in water samples was determined to be 0.741 μg L−1 using synthesized nano-hybrids.
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