title: Production of quasi-2D graphene nanosheets through the solvent exfoliation of pitch-based carbon fiber.
abstract: Stable dispersion of quasi-2D graphene sheets with a concentration up to 1.27 mg mL(-1) was prepared by sonication-assisted solvent exfoliation of pitch-based carbon fiber in N-methyl pyrrolidone with the mass yield of 2.32%. Prepared quasi-2D graphene sheets have multi-layered 2D plate-like morphology with rich inclusions of graphitic carbons, a low number of structural defects, and high dispersion stability in aprotic polar solvents, and facilitate the utilization of quasi-2D graphene sheets prepared from pitch-based carbon fiber for various electronic and structural applications. Thin films of quasi-2D graphene sheets prepared by vacuum filtration of the dispersion of quasi-2D graphene sheets demonstrated electrical conductivity up to 1.14 × 10(4) Ω/□ even without thermal treatment, which shows that pitch-based carbon fiber might be useful as the source of graphene-related nanomaterials. Because pitch-based carbon fiber could be prepared from petroleum pitch, a very cheap structural material for the pavement of asphalt roads, our approach might be promising for the mass production of quasi-2D graphene nanomaterials.
authors: Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju 380-702, Korea.
authors: Youngju
authors: Y
authors: Yeon
authors: Mi Yeon
authors: MY
authors: Lee
authors: Sang Youl
authors: SY
authors: Kim
authors: Jihoon
authors: J
authors: Lee
authors: Bongsoo
authors: B
authors: Kim
authors: Byoungnam
authors: B
authors: Park
authors: Insik
authors: I
authors: In