Preparation by Ultrasonic Treatment of Graphene Oxide
Oh et al. (2010) have shown a preparation route using ultrasonic irradiation to produce graphene oxide (GO) layers. Therefore, they suspended twenty-five milligrams of graphene oxide powder in 200 ml of de-ionized water. By stirring, they obtained an inhomogeneous brown suspension. The resulting suspensions were sonicated (ultrasonically treated graphene oxide was produced 30 min, 1.3 × 105J), and graphene oxide was produced. An FTIR spectroscopy showed that the ultrasonic treatment did not chan