| 초록 |
The microwave irradiation technique was used to convert the natural graphite powder to graphene flakes, which are composed of a few-layer graphene and graphene oxide in a commercial microwave oven. We investigated the microwave treatment conditions that could ensure efficient exfoliation of graphite powders for high quality graphene or GO flakes: the type and amount of oxidants, microwave irradiation cycle conditions, and microwave power. We presented progressive physicochemical changes of exfoliated graphite under the repeated steps of microwave irradiation up to five times. Overall, it was demonstrated that the microwave irradiation technique could intercalate and exfoliate the graphite layers through oxidative reactions, which could be used to synthesize a-few-layer graphene or GO flakes in a facile manner for a large-volume production. |
