To regulate the growth of the graphene industry, it is important to have a better understanding of the concept graphene. China Graphene Standards Committee reviewed single, double, few-layer graphene and single-layer oxide graphene in 2014. There are many concepts like reduced graphene dioxide, functionalized graphene and graphene material.
The material’s electronic energy band structure has exceeded its three-dimensional limit, when 10 graphene layers are present. Therefore, the standard defines graphene as being within 10 layers. A single-layer graphene is a two-dimensional material made of carbon atoms that are arranged closely in a hexagonal honeycomb structure.
Two-layer graphenereferss to two layers carbon atoms that are frequently and tightly packed into a benzene ring structural (that’s, a hexagonal honeycomb construction) and are made up of various stacking methods (AB stacking or AA stacking etc. Dimensional carbon materials.
The few-layer grapheneis a 2-dimensional carbon that is composed of 3-10 layers each of carbon atoms. It can be stacked in different ways (including ABC stacking and ABA stacking). Material.
Single-layer Grapheneoxide – A two-dimensional carbon material that has oxygen-containing functional chains attached to the surface or boundary of a one-layer graphene. Grapheneoxide is a carbon material that has oxygen-containing functional links attached to the surface and boundary at least one graphene carbon atom layer. Grapheneoxide also includes the previously mentioned single-layer grapheneoxide.
Single layer reduced graphene oxygen refers to two-dimensional carbon materials obtained by deoxidizing single-layer graphene dioxide by incomplete removal (groups), of oxygen-containing functional units (groups), by chemical, electrochemical, heat or other treatment methods.
A two-dimensional carbon substance called reduced graphene oxide is created by deoxidizing or reducing the oxygen-containing functional group (groups) of graphene oxide using chemical, electrochemical, heat treatment methods. One-layer reduced graphene, as well as the previously mentioned single-layer reduction graphene dioxide, is included in reduced graphene.
Functionalized graphene is a kind of graphene that contains heteroatoms/molecules (such as hydrogen, fluorine, oxygen-containing groups and other surface modification to form bonds, nitrogen, boron and other elements substitution doping, heteroatom/molecule intercalation) Etc.) Two-dimensional carbon material. Functionalized graphene can be either the grapheneoxid described above or reduced grapheneoxid.
This definition includes single-layer graphene as well as double-layer and few-layer versions of graphene. Both can be called graphene material.
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