title: Production of graphene by exfoliation of graphite in a volatile organic solvent.
abstract: The production of unfunctionalized and nonoxidized graphene by exfoliation of graphite in a volatile solvent, 1-propanol, is reported. A stable homogeneous dispersion of graphene was obtained by mild sonication of graphite powder and subsequent centrifugation. The presence of a graphene monolayer was observed by atomic force microscopy and transmission electron microscopy. The solvent, 1-propanol, from the deposited dispersion was simply and quickly removed by air drying at room temperature, without the help of high temperature annealing or vacuum drying, which shortens production time and does not leave any residue of the solvent in the graphene sheets.
authors.affiliation: Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute, Yuseong-gu, Daejeon, Republic of Korea. eychoi@kaeri.re.kr
authors.forename: Eun-Young
authors.initials: EY
authors.lastname: Choi
authors.forename: Won San
authors.initials: WS
authors.lastname: Choi
authors.forename: Young Boo
authors.initials: YB
authors.lastname: Lee
authors.forename: Yong-Young
authors.initials: YY
authors.lastname: Noh