Chemical properties of graphene

We know about graphene chemistry: similar to the surface of the graphite and graphene can adsorption and stripping of all kinds of atoms and molecules. From the point of view of surface chemistry, graphene is similar to the properties of graphite, graphite available to estimate the properties of graphene. Graphene chemistry may have many potential applications, however, to the chemistry of graphene is widely attention has a had to overcome obstacles: the sample of the lack of applicable to traditional chemical methods. This unresolved, the graphene chemistry will face many difficulties.

1, oxidation, and active metal reaction

C+K=C8K

Equivalent to open the partial double bond

2, addition reaction, and open the partial double bond

3, reducibility, can be oxidizing acid oxidation

4HNO3+C=4NO2+CO2+2H2O

Through this method, graphene can be cut into small pieces.

4, high temperature oxidation in air

C + O2 = CO or CO2

The chemical properties of graphene are not stable

Physical and chemical properties of elemental carbon depends on its crystal structure, appearance, density, melting point, such as different, chemistry of the elemental carbon is stable under normal temperature, insoluble in water, dilute acid, dilute alkali and organic solvent, here said the chemical properties, also is not easy to react, will look at its allotrope, such as diamond of more than 3500 ℃, melting point it's not easy to react.

Graphene carbon atoms are arranged and single atomic layer of graphite, the same is a carbon atom with sp2 hybrid orbital are arranged honeycomb lattice (honeycombcrystallattice) composed of single-layer two-dimensional crystal.Graphene can be imagined as carbon atoms and the covalent bond formed by the atomic size mesh.The naming of graphene graphite from English (graphite) + - ene (alkene end).Graphene is considered to be plane polycyclic aromatic hydrocarbon atomic crystal.

The structure of graphene is very stable, carbon-carbon bonds (carbon - carbonbond) only 1.42 & Aring;.Graphene internal connection between carbon atoms is very flexible, when applying force in graphene, carbon atoms will face bending deformation, makes carbon atoms do not have to rearrange to adapt to external forces, to maintain stability of the structure.The stability of the lattice structure to make graphene has excellent thermal conductivity.In addition, the electron moving in orbit in graphene, will not happen by lattice defects or introduce foreign atomic scattering.Because atoms inter-atomic forces is very strong, in normal temperature, even bumped against surrounding carbon atoms, graphene internal electronic interference is very small.

Graphene rolled round barrel can be used for carbon nanotubes;Graphene also be made into ballistic transistor (ballistictransistor) and attracted a large interest of scientists.In March 2006, Georgia institute of technology researchers announced that they succeeded in manufacturing the graphene plane field effect transistor, and observed the quantum interference effect, and based on this result, developed for graphene circuit substrate.

To sum up, this article is to explain the chemical properties of graphene, the chemistry of graphene is not stable, I believe you understanding of the chemistry of graphene is more and more deep, I hope this article can have larger reference value to readers.

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