| 초록 |
Graphene is a single layer of carbon atoms in a closely packed honeycomb two-dimensional (2D) lattice possessing excellent mechanical, electrical, thermal, optical properties and very high specific surface area. There are a number of methods for preparing graphene and chemically or mechanically modified graphene from graphite and derivatives of graphite, each with different advantages and disadvantages in given applications. Graphite oxide (GO), first prepared almost 150 years ago, has been of great interest as a precursor for the affordable and large-scale production of graphene-based materials. Because GO is electrically insulating, various reduced and functionalized methods have been developed to restore its electrical conductivity when forming GO derived materials examples reduced graphene oxide sheets, assembled paper-like forms , and graphene-based composites. Graphene nanosheets were producedusing precursor porous crystalline carbon, which was produced at a hightemperature of 1200 oC, via a massive wet chemistry synthetic route . X-ray diffraction (XRD)and transmission electron microscopy (TEM) show that the graphene nanosheets wereproduced with 2~3 layers and ripple-like corrugations. N2 sorption isothermsconfirmed that the RGO from CDC had a large mesopore portion with small microporosity. |
