title: Characterization on the Expanding Nature of Graphite in Microwave-Irradiated Exfoliation.
abstract: Much still remains uncertain and controversial about the mechanophysical parameters involved in graphite exfoliation. Here, we quantify the expansion characteristics of natural graphite in the microwave-irradiated exfoliation where KMnO4 and HNO3 are used as an oxidant and an intercalant, respectively. As a mark of the degree to which graphite becomes exfoliated, the expansion ratio of graphite is investigated as a function of mix ratio by weight of 3 ingredients (i.e., graphite, KMnO4, and HNO3), mixing time, and graphite physical properties. The findings of this study will lead to a better understanding of graphite exfoliation and make it possible to achieve the industrial-scale production of defect-free graphene.
authors.forename: Sungmin
authors.initials: S
authors.lastname: Park
authors.forename: Jonghun
authors.initials: J
authors.lastname: Kim
authors.forename: Ki-Joon
authors.initials: KJ
authors.lastname: Jeon
authors.forename: Sang-Hee
authors.initials: SH
authors.lastname: Yoon