Abstract
The sepiolite and CuFe2O4were combined to prepare the sepiolite/CuFe2O4composite. The magnetic composite was characterized by X-ray diffraction (XRD), transmission electronic microscopy (TEM) and vibration sample magnetometer (VSM) and N2adsorption isotherms. Adsorption characteristics of the composite were examined by using Cu2+and methylene blue as adsorbates. The results show that CuFe2O4particles adhere to the surface of sepiolite fiber to form the sepiolite/CuFe2O4composite which show well characteristic of superparamagnetism and is effective for the removal of Cu2+or methylene blue. When the mass ratios of sepiolite and CuFe2O4is 7:3, the saturation and remanence magnetization are 7.140 and 0.0246 A·m2/kg, and coercive force is 0.0180 A/m for magnetic sepiolite. The saturated adsorption capacity for Cu2+and the removal rate of methylene blue is 15.72 mg/g, 99.48%, respectively.
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