▎ 摘　　要

NOVELTY - Preparation of graphite oxide from graphite chemical exfoliation process involves using sulfuric acid and potassium permanganate as oxidizing agents, to form precursor which is subjected to thermal reduction at 1000℃, to obtain graphene materials, followed by purifying formed graphite oxide. The graphene consists of a flat monolayer of carbon atoms arranged in a two-dimensional network. Graphene is used for building materials with other dimensions, such as nanotubes (1D) or fluorene (0D). Graphene is stronger and harder than diamond, a good electrical conductor (similar to copper) and surpasses all other known materials as a heat conductor. One way to produce graphene on a large scale, is through the chemical exfoliation method using strong oxidizing agents. USE - Method is used for preparing graphene used in manufacture of electronic products such as in electrochemical capacitors. ADVANTAGE - The prepared graphene has excellent electrical properties and the creation of new materials. During the process, controlling the process of intercalation of oxidizing species in the spacing between the lamellar layers of graphite, enables to increase the interplanar distances. DETAILED DESCRIPTION - Preparation of graphite oxide from graphite chemical exfoliation process involves using sulfuric acid and potassium permanganate as oxidizing agents, to form precursor which is subjected to thermal reduction at 1000℃, to obtain graphene materials, followed by purifying formed graphite oxide. The graphene consists of a flat monolayer of carbon atoms arranged in a two-dimensional network. Graphene is used for building materials with other dimensions, such as nanotubes (1D) or fluorene (0D). Graphene is stronger and harder than diamond, a good electrical conductor (similar to copper) and surpasses all other known materials as a heat conductor. One way to produce graphene on a large scale, is through the chemical exfoliation method using strong oxidizing agents. In order to obtain graphene material with desirable characteristics, the method involves controlling the step that involves the intercalation of substances between the lamellar layers of graphite, performing efficient chemical exfoliation process, and controlled thermal reduction step to obtain graphene. The method involves systematic study with different oxidizing substances, time and temperature control in the graphite intercalation process, as well as temperature control for the thermal reduction of graphene oxide. Also, the characterization techniques by scanning electron microscopy, Raman spectroscopy, X-Ray diffraction spectroscopy and Fourier transform infrared spectroscopy are performed during the process, to evaluate the quality of the materials obtained.