“…As mentioned in Section 2.3, three BP samples were processed through vacuum filtration technique with the assistance of an ultrasound probe (ultrasonication), using the following parameters: 40% amplitude, 10s on and 5 s of the cycle, and processing time of 40 min, according to work published by Rojas et al [18]. Ultrasonication technique is widely used to process carbon nanotubes buckypapers, however long time and high power can induce side wall broken, tubes shorten and amorphous carbon degradation [47]. Therefore, the ultrasound's power was varied (50, 75, and 100 W), and its influence was studied on the morphological, porosity, XRD, and Raman spectroscopy analyzes of the BP.…”