磁性可控MWNTs/SDS/Fe_3O_4纳米复合材料的制备及其对亚甲基蓝染料的吸附研究  

Preparation of controllable magnetism MWNTs/SDS/Fe_3O_4 nanocomposites and its research on adsorption of methylene blue

作　　者：宋小杰[1] 杨帆[2] 徐玲[1] 王献彪[1] 

机构地区：[1]安徽建筑工业学院材料与化学工程学院,安徽合肥230601 [2]安徽医科大学化学教研室,安徽合肥230061

出　　处：《应用化工》2013年第2期210-212,217,共4页Applied Chemical Industry

基　　金：国家自然科学基金青年基金(21001002);安徽省教育厅自然科学基金项目(KJ2010B291)

摘　　要：通过变动Fe、C的摩尔比,利用非共价的方式,借助于表面活性剂十二烷基硫酸钠(SDS)将Fe3O4磁性纳米粒子定量地修饰到多壁碳纳米管(MWNTs)的表面,制备出MWNTs/SDS/Fe3O4纳米复合材料。结果表明,随着Fe、C摩尔比中Fe的百分含量升高,磁性复合材料的饱和磁化强度相应增大,所以可以通过改变铁碳比来制备磁性可控的纳米磁性复合材料。另外,MWNTs/SDS/Fe3O4纳米复合材料的吸附实验表明,对亚甲基蓝染料溶液有较高的吸附效率,作为一种磁性材料,利用永磁体,可以轻易地将吸附完成后的纳米复合材料从染料溶液中分离出来,重新收集后循环利用。A magnetic composite of multi-walled carbon nanotubes （MWNTs） decorated with iron oxide nanoparticles （NPs） quantificationally was synthesized successfully by a simple and effective chemistry precipitation method using sodium dodecyl sulfate （SDS） with the molar ratio of Fe and C. The MWNTs/ SDS/Fe3O4 nanocomposite was characterized by XRD ,TEM ,and VSM techniques ,the saturated magneti- zation of the resulted magnetic nanocomposite increased correspondingly. Therefore, it could be learned that magnetic property of the nanocomposites could be controlled by varying the ratio of Fe/C. The MWNTs/SDS/Fe3O4 nanocomposites were employed as a new adsorbent for dye removal. The adsorption results showed that adsorption efficiency of MWNTs/SDS/Fe3O4 nanocomposites was high for methylene blue. As a magnetic material, it could be separated easily from aqueous solution by an external magnet, collected and used repeatedly.

关 键 词：碳纳米管 FE3O4纳米粒子 定量 可控磁性 吸附 

分 类 号：O613[理学—无机化学]