Graphene, because of its excellent performance, has a great potential for industrial applications. States researchers have actively studied in the production of graphene, a common method of chemical vapor deposition (CVD) on the chemical, the epitaxial growth method, the mechanical peeling method physically. These methods are currently unable to mass production, though graphite oxide in water by chemical peel can allow for large-scale production of graphene nanosheets, but there are many drawbacks, including poor complicated preparation process, as well as product quality and other shortcomings. In addition, the introduction of the graphene sheet oxidizing a variety of oxygen-containing groups (such as hydroxyl group, carboxyl group, epoxy group), tend to make the functionalized complex and the subsequent non-controlled, these factors may also cause performance degradation of graphene, for example, resulting in low electrical conductivity, structural defects, poor thermal stability and mechanical stability. We demonstrated that a simple and efficient preparation of graphene milling techniques, our experimental approach is to dry ice with simultaneous addition of the graphite powder and the ball mill pot in a closed, high-speed operation by a ball mill, ball peeling layer or layers of graphite obtained graphite, dry ice expanded role is played, the role of graphite foam, helps to speed up the release of graphite, ultimately graphene. This method is simple, feasible and strong, pure graphene such as access to benefits. We also added during the milling process of analyzing a specific chemical reagent appropriate to obtain graphene with special functional groups, such as potassium hydroxide (KOH), to give the hydroxy-functionalized graphene (G-OH).

Production of graphene by dry ice ball milling method

249th National Meeting (2015)

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