Beilstein J. Nanotechnol.2023,14, 509–521, doi:10.3762/bjnano.14.42
graphite.
To ensure that thicker material was removed from the dispersion, an abbreviated cascadecentrifugation process was applied [27]. The dispersion obtained following 5 h of sonication was centrifuged at low speed (250g) for 2 h to remove the very largest particles of unexfoliated graphite. The
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Figure 1:
(A) Example AFM image of flakes from the GNPref sample; the scale bar is 2 μm. (B) Example SEM imag...
Beilstein J. Nanotechnol.2022,13, 666–674, doi:10.3762/bjnano.13.58
typically polydisperse, containing particles of various sizes, which is not optimal for applications. We employed cascadecentrifugation to select specific particle sizes in solution and prepared thin films from those graphene particles using the Langmuir–Blodgett assembly. Employing centrifugation speeds
no exfoliation experience to make use of widely available graphene materials.
Keywords: 2D materials; cascadecentrifugation; graphene; Langmuir–Blodgett deposition; transparent conductors; Introduction
The interest in graphene and other 2D materials keeps growing, especially since the initial
size selection is the route to take towards the mass use of 2D materials in solution.
Although size selection through post-processing with cascadecentrifugation has been demonstrated in the context of ultrasonic LPE materials [30][31], to the best of our knowledge, the method has not been applied to