镍铁氧体/碳纳米管复合材料的制备及其对染料废水的吸附性能  

Nickel Ferrite/Carbon Nanotubes Composites:Preparation and Adsorption for Dye Wastewater

作　　者：陈海峰[1] 吴雪[1] 李良超[1] 周琰[1] 范蓓 丁艳 

机构地区：[1]先进催化材料教育部重点实验室,浙江师范大学化学系,金华321004

出　　处：《无机化学学报》2014年第2期337-344,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21071125);金华市科技计划重点项目(No.20101093)资助项目

摘　　要：用浸渍法制备了镍铁氧体/碳纳米管(NF/MWNTs)复合材料。用XRD、SEM、TEM、VSM、UV-Vis等表征了样品的组成、结构、形貌、磁性能和吸附性能。结果表明,制备的NF/MWNTs复合材料保留了碳纳米管优良的吸附性能,且具有良好的镍铁氧体负载率和优异的磁性能。质量比(mNF/mMWNTs)为1的NF/MWNTs复合材料对亚甲基蓝溶液的最大吸附容量为18.87 mg·g-1,其吸附行为符合Langmuir和Freundlich模型。NF/MWNTs复合材料对亚甲基蓝溶液的脱色率与溶液温度和pH值呈正相关性。此外,NF/MWNTs复合材料回收容易,活化处理简便,可重复使用。Nickel ferrite/carbon nanotubes （NF/MWNTs） composites were prepared by impregnation method. The composition, structure, morphology, magnetic property, and adsorption property of the samples were characterized by XRD, SEM, TEM, VSM, UV-Vis, etc. The results indicate that the NF/MWNTs composites not only keep the good adsorption performance of carbon nanotubes, but also have nice loading factor for nickel ferrite and excellent magnetic property. The adsorption behavior of the NF/MWNTs composite with mNF/mMWNTs of 1 on methylene blue solution is in accord with Langmuir model and Freundlich model. The maximum adsorption capacity of the composite can reach 18.87 mg·g-1. Meanwhile, the temperature and pHvalue have positive correlation with the discoloration rate of methylene blue solution. In addition, the NF/MWNTs composites can be recovered easily with magnetism and can be activated simply and conveniently for reuse.

关 键 词：镍铁氧体 碳纳米管 亚甲基蓝 吸附 脱色率 

分 类 号：O647.3[理学—物理化学] TB34[理学—化学]