There are a relatively large number of studies on surfactants facilitates the dispersion of multi-walled carbon nanotubes (MWCNTs), however reports for both orientation and size aggregation of surfactants on MWCNTs are scarcely described. In this study, we demonstrate the visualization of the surfactants aggregates onto MWCNTs using atomic force microscopic (AFM) and field emission electron scanning microscopy (FESEM) to provide information on the orientation and the grains size of surfactants-MWCNTs aggregates. MWCNTs treated with surfactants of different charges, namely sodium dodecyl sulphate (SDS), the anionic, cetyltrimethyl ammonium bromide (CTAB), the cationic and polysorbate 80 (Tween-80), the non-ionic, displayed substantial pattern of surfactant-MWCNTs surface contours. Raman spectroscopy analysis has been presented in order to report the characteristic of defective MWCNTs graphitize structure upon non-covalent adsorption of respective surfactants.

关于表面活性剂促进多壁碳纳米管（MWCNT）分散的研究相对较多，但是几乎没有描述关于表面活性剂在MWCNT上的取向和尺寸聚集的报道。在这项研究中，我们使用原子力显微镜（AFM）和场发射电子扫描显微镜（FESEM）展示了表面活性剂聚集体在MWCNTs上的可视化，以提供有关表面活性剂-MWCNTs聚集体的取向和晶粒尺寸的信息。用不同电荷的表面活性剂处理的MWCNTs，即十二烷基硫酸钠（SDS），阴离子，十六烷基三甲基溴化铵（CTAB），阳离子和聚山梨酯80（Tween-80），非离子表面活性剂-MWCNTs表面显示出实质性的图案轮廓。