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.
出处
《应用化工》
CAS
CSCD
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)
关键词
碳纳米管
FE3O4纳米粒子
定量
可控磁性
吸附
carbon nanotubes
Fe3O4 nanoparticles
quantificational
controllable magnetism
adsorption
