Novel Synthesis of Magnetic Agar and Its Application in Cu Ions Adsorption
Fengqin Zhang, Xiaolong Li, Nongyue He, Taotao Li, Elingarami Sauli · Journal of Nanoscience and Nanotechnology · 2015
The fabrication of magnetic agar based on chemical precipitation is presented. The magnetic agar has been prepared by seeping NaOH solution into solid agar gel containing Fe2+ and Fe3+. The solid agar gels were heated to become solution and magnetic characteristic disappeared. When the temperature of the solution returned to room temperature, solid magnetic agar was vividly obtained again. The prepared magnetic agars were characterized by Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) that provided morphological and dimensional characteristic of nanometric magnetic nanoparticles embedded within the agar gel. Finally, magnetic agars were used for the adsorption of Cu2+ ion. The adsorption rate of Cu2+ ion reached 92.5% when Cu2+ ion concentration was 250 mg/L and the addition of magnetic agar was 8 g/L.