Abstract
The transformation of individual carbon nanotubes (CNTs) into buckypaper often results in random organization, leading to gaps or pores between them. These gaps act as flaws, reducing the overall properties of the bulk CNT structure. This study presents an advanced technique for densifying the structure by filling the gaps to tackle this issue. To achieve this, smaller multi-walled carbon nanotubes (MWCNTs) were employed to fill the gaps in the buckypaper composed of larger MWCNTs. This approach resulted in a significant improvement in the physical properties of the structure. The resulting hybrid buckypaper was thoroughly characterized using various techniques, including scanning electron microscopy, Raman spectroscopy, BET, XRD, and thermogravimetric analysis. The findings of this study demonstrated notable enhancements in the packing density, specific surface area, and tensile strength of the hybrid buckypaper, with improvements of 31.38 %, 63 %, and 20 %, respectively. Furthermore, the hybrid buckypaper proved to be an effective adsorbent for removing methylene blue dye from wastewater, exhibiting an impressive adsorption efficiency of 99.53 %. The absence of sludge impurities due to its high mechanical strength, combined with its superior rejuvenation capacity during multiple uses encourages cleaner and efficient water treatment system.
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