CuFe2O4/改性活性炭磁性复合材料表征及其吸附性能

运用化学沉淀法合成了CuFe2O4/改性活性炭(MAC)磁性纳米复合材料,并研究其对罗丹明B(RhB)的吸附性能。运用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)、振动样品磁强计(VSM)和比表面积测定仪等技术对其理化性质进行了表征,分析表明复合材料颗粒大小在10~100nm之间;探讨了CuFe2O4/MAC磁性复合材料吸附RhB的过程,考察了溶液的pH值、RhB的初始质量浓度、温度等因素对吸附的影响。结果表明:CuFe2O4/MAC磁性复合材料可有效吸附去除RhB,其吸附过程适合准二级动力学模型及吸附等温线符合Freundlich模型,饱和吸附容量为73.54mg/g。CuFe2O4/MAC磁性复合材料具有较好吸附性能和磁响应性,易于分离回收,可作为一种有效去除水体污染物的吸附材料。

Characterization and Adsorption Properties of Magnetic Composite CuFe2O4/Modified Activated Carbon

The magnetic composite CuFe2O4/modified activated carbon(MAC)was synthesized by chemical precipitation,and its adsorption properties of Rh B were studied.The physicochemical property of CuFe2O4/MAC was characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),fourier transform infrared(FT-IR),vibrating sample magnetometer(VSM)and Brunauer-Emmett-Teller surface area measurement(BET)methods.The particle size of composite was between 10 nm to 100 nm.The adsorption process of Rh B was studied by magnetic composite CuFe2O4/MAC.The effect of solution pH,initial concentration of Rh B and temperature on the adsorption was investigated.The results show that Rh B could be effectively adsorbed by magnetic composite CuFe2O4/MAC.The adsorption process was well fitted with the Langmuir models with the adsorption maximum capacity of Rh B 73.54 mg/g.The adsorption process of magnetic composite CuFe2O4/MAC for Rh B was conformed to the Pseudo-second-order kinetics model.Therefore,the magnetic composite CuFe2O4/MAC has good adsorption and magnetism and is easy to separate,which can be used as an adsorption material to effectively remove water pollutants.