What are the properties of reduced graphene oxide?

Solubility: Insoluble. Density: 1.91g/cm. Dispersability: It can be dispersed at low concentrations of less than 0.1mg/mL in DMSO, NMP, DMF. Electrical conductivity: 666,7 S/m.

Why is graphene oxide important?

With respect to electrical conductivity, graphene oxide functions as an electrical insulator, because of the disturbance of its sp2 bonding networks. It is important to reduce the graphene oxide so as to recover the honeycomb hexagonal lattice of graphene, in order to restore electrical conductivity.

What is thermally reduced graphene oxide?

Among various methods used for the reduction of graphene oxide (GO) into a purer form of graphene, the thermal reduction method provides a simpler, safer, and economic alternative, compared to other techniques. Thermal reduction of GO causes significant weight loss and volume expansion of the material.

How does graphene oxide reduce graphene?

If the exfoliated sheets contain only one or few layers of carbon atoms like graphene, these sheets are named graphene oxide (GO). The most attractive property of GO is that it can be (partly) reduced to graphene-like sheets by removing the oxygen-containing groups with the recovery of a conjugated structure.

What breaks down Graphene oxide?

Graphene oxide breaks down in the presence of hydrogen peroxide, in a reaction catalysed by the myeloperoxidase enzyme. The degree of degradation depends on the colloidal stability of the suspension, which indicates that the hydrophilic nature of graphene oxide is a key factor in its breakdown by enzymes.

How is graphene oxide produced?

It is artificially created by treating graphite with strong oxidisers such as sulphuric acid. Graphene oxide is effectively a by-product of this oxidisation as when the oxidising agents react with graphite, the interplanar spacing between the layers of graphite is increased.

What is the difference between graphene oxide and reduced graphene oxide?

The key difference between graphene oxide and reduced graphene oxide is that the graphene oxide contains oxygen-containing functional groups whereas the reduced graphene oxide lacks the oxygen-containing functional groups. Graphite oxide is a material that consists of carbon, hydrogen and oxygen atoms.