磁性石墨烯泡沫的制备及对Cu2+的吸附性能  

Preparation and Adsorption Properties of Magnetic Graphene Foam for Cu2+

作　　者：张琰[1] 张万俊 董梦果 赵翠真 杨清香[1] 陈志军[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450001 [2]河南金谷实业发展有限公司,河南郑州450000

出　　处：《精细化工》2018年第1期10-16,共7页Fine Chemicals

基　　金：国家自然科学基金项目(21271160,21401170,20976168);郑州轻工业学院博士基金(2013BSJJ021)~~

摘　　要：以氧化石墨烯（GO）为前驱体,采用溶剂热法制备了磁性石墨烯泡沫（MGF）复合物（Fe3O4/GF）。用X射线衍射（XRD）、透射电镜（TEM）及场发射扫描电子显微镜（FESEM）、傅里叶红外光谱（FTIR）及振动样品磁强计（VSM）对其进行了表征。测定了不同Cu^2＋初始质量浓度、反应时间和温度下复合物对水溶液中Cu^2＋的吸附性能。结果表明：Fe3O4成功复合到了石墨烯上且为三维泡沫结构;复合物对Cu^2＋吸附量可达49.20 mg/g;吸附过程符合准二级动力学模型。磁性复合物可以借助外部磁场实现快速磁分离。In this paper,magnetic graphene foam （MGF） composite （Fe3O4/GF） was prepared via solvent-thermal reaction method using graphene oxide （GO） as precursor. The composite was characterized by means of X-ray diffraction （ XRD ）, transmission electron microscopy （ TEM ）, field emission scanning electron microscopy （FESEM）, Fourier transform infrared spectroscopy （FTIR）and vibrating sample magnetometry （VSM）. The adsorption behavior of composite for Cu2＋ ions in aqueous solution was studied at different experimental parameters, such as initial concentration of Cu2 ＋ , reaction time and temperature. The results showed that Fe3O4 was successfully combined to grapheme to form the composite with a three-dimensional foam structure. The adsorption capacity of Cu2＋ was 49.20 mg/g. The adsorption process was in accordance with the pseudo-second-order kinetic model. Besides, the magnetic composite could achieve rapid magnetic separation under an external magnetic field.

关 键 词：石墨烯泡沫 磁性复合物 吸附 功能材料 

分 类 号：X131.2[环境科学与工程—环境科学] TB333[一般工业技术—材料科学与工程]