多壁碳纳米管的改性研究

发布时间：2018-04-16 22:07

  本文选题：多壁碳纳米管 + 蒸发酸纯化法　； 参考：《当代化工》2016年07期

【摘要】：采用蒸发酸纯化法处理多壁碳纳米管以去除管体表面无定形碳等杂质和改善管体之间相互缠绕团聚的现象,利用X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)对未纯化碳纳米管和纯化之后碳纳米管的结构和形貌进行表征。结果表明:与纯化处理前的多壁碳纳米管相比,在维持原有结构的情况下,纯化后的多壁碳纳米管管体表面的无定形碳等杂质去除干净,管体缺陷处断裂出现更多的端口,使得多壁碳纳米管的长度变短,比表面积增大,且在管体断裂处形成很多的亲水性基团,使管体的分散性提高从而明显改善了管体之间的缠绕团聚现象。
[Abstract]:The evaporation acid purification method was used to treat multi-walled carbon nanotubes to remove impurities such as amorphous carbon on the surface of tubes and to improve the phenomenon of winding and agglomeration between tubes.The structure and morphology of unpurified carbon nanotubes and purified carbon nanotubes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).The results show that compared with the multi-walled carbon nanotubes before purification, the impurities such as amorphous carbon on the surface of the purified multi-walled carbon nanotubes are removed and more ports are broken at the defects of the tubes under the condition of maintaining the original structure.The length of multi-walled carbon nanotubes becomes shorter, the specific surface area increases, and a lot of hydrophilic groups are formed at the fracture of the tubes, which improves the dispersity of the tubes and obviously improves the winding and agglomeration between the tubes.
【作者单位】： 商洛学院化学工程与现代材料学院/陕西省尾矿资源综合利用重点实验室;
【基金】：陕西省科技统筹创新工程基金资助项目,项目号:2012KTDZ02-02-01
【分类号】：TB383.1
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本文编号：1760763