Figure 14. Image 1: Graphite oxide in aqueous solution. Image 2: Dried graphite oxide. Image 3: Influence of the ultrasonic bath. 3a: after 0 seconds, 3b: after 10 seconds, 3c: after 2 minutes. Image 4: Formation of the graphene oxide solution after the heavier particles have settled. Image 5: Graphene oxide solution. Image 6: Graphene oxide sucked on filter paper (pore size 200 nm)

From

Rapid Synthesis of Yellow Graphite Oxide - One-Step Electrochemical Oxidation of Graphite in Organic Solvents

Andreas Schedy, Beau Matyas, Marco Oetken

World Journal of Chemical Education. 2019, 7(2), 109-119 doi:10.12691/wjce-7-2-11