Fabrication And Investigations Of Low-dimensional Of Graphene-based Nano Materials

Graphene is defined by a single layer of graphite, which referring to a single carbon atom thick and part of a two-dimensional sp2 hybridized carbon material. In order to achieve diversification based materials and its application, The most of studies show that graphene can fabricate ero-dimensional graphene quantum dots and one-dimensional graphene nanoscrolls from two-dimensional graphene,as well as two-dimensional and three-dimensional configuration Cluster porous graphene. In this paper, firstly, graphene quantum dots are prepared by oxide cutting method, which obtained by reduction of graphene oxide quantum dot, and discussing the nature of graphene quantum dots.Secondly, a foldable graphene nanoscrolls are fabricated by two-dimensional graphene in liquid nitrogen and cool to form a graphene nano-dimensional nanoscrolls, from the application point of view, graphene nanoscrolls have an increase of its surface area and as electrode materials applied in upercapacitor. Finally, We reported a low cost and high efficient method to fabricate free-standing sulfonated graphene /polyaniline nanocomposite papers. The nanocomposite paper had layered structure, and polyaniline was uniformly intercalated into the sulfonated graphene layers. The nanostructured polyaniline was coated on the surface of individual sulfonated graphene sheets. It was found that the sulfonated graphene actually acted as dopants to dope with the polyaniline. The sulfonated graphene /polyaniline nanocomposite papers had thin, lightweight, and flexible characters and its supercapacitor devices displayed excellent electrochemical performance in terms of ratio capacitance and good cycling stability. We have discovered a simple and effective way to prepare this materials, and to study as electrode material applied in supercapacitor.