Preparation of Magnetic Iron/Graphitic Mesoporous Carbon Composites as Efficient Returnable Adsorbents for Methyl Orange Removal

Lifeng Cui
2016 International Journal of Electrochemical Science  
The mesoporous silica SBA-15 was regarded as the template to synthesize a variety of magnetic iron/graphitic mesoporous carbon (Mag-GMC) composites, via a simple one-step solid-liquid grinding/templating route. The physicochemical properties of these composites were characterized by X-ray diffractometry, nitrogen sorption isotherms, transmission electron microscopy and vibratingsample magnetometry. The methyl orange (MO) removal effects of these composites as adsorbents were investigated via a
more » ... investigated via a batch adsorption technique, and the effects of contact time and initial MO concentration on the adsorption capacity were also discussed. Also, the zeta potential of the asprepared Mag-GMC composites was measured and compared. Mag-GMC-0.5 shows the highest MO adsorption ability of 90.6 mg/g, which is much higher than that of commercial active carbon. Recycle adsorption experiments indicate that the Mag-GMC composites are promising in returnable dye removal. The excellent adsorption performance can be ascribing to its unique mesoporous structure and decent zeta potential.
doi:10.20964/2016.10.35 fatcat:35zwmx75uvhifdn65iu73wxlyu