Grapheneoxid, a key derivative of graphene based materials, is an important one. The highly conjugated graphene structure is destroyed in the oxidation process, but the graphene oxide retains unique surface properties and a layered structure. The introduction of oxygen-containing groups not only makes the graphene oxide chemically stable, but also provides surface modification active sites and a larger specific surface area for the synthesis of graphene-based/graphene oxide-based materials. Graphene dioxide is an excellent precursor and support carrier in the synthesis and control of graphene-based materials. When compounding with metals and metal oxides, high-molecular polymers, or other materials, it can provide large specific surface areas to disperse and prevent agglomeration.
Grapheneoxid also exhibits excellent physical, chemical, and optical properties. Because of the coexistence between various oxygen-containing groups on the base of graphene sheet framework and the edges, graphene oxide can easily be controlled. The type and quantity of oxygen-containing groups used to modify its conductivity or band gap are determined by how many they exist. There are many uses for this material. Grapheneoxid is a new carbon material. It exhibits excellent properties with high specific surface areas and numerous functional groups. The wide variety of applications for grapheneoxid composite materials (including polymer composites and inorganic compounds materials) has led to the development of a new research focus on graphene-oxid surface modification.

1 Optoelectronics
In 2016, Karteri et al. In 2016, Karteri and colleagues studied organic thin-film transistors with SiO2/GO insulating layers, as well as their photoresponse characteristics devices. The characteristics of the transistor were also improved by adding GO to the insulating layers.
2 solar cells
You will get the same photoelectric conversion efficiency as PEDOT:PSS if you use GO instead. Study of the effect of different thicknesses GO layers on polymer-solar cells has been done. It has been found that the device with the highest photoelectric conversion rate is when the thickness of the GO layer is 2 nm.
3 Flexible Sensor
Because GO has many hydrophilic functional classes, it can be easily modified. Its high specific surface, good dispersion, good humidity sensitivity, and large specific surface area make it an ideal sensor material in the field of flexible sensors.
4 Biological considerations
GO is a unique combination of electronic, optical, mechanical and electrical properties that has been used in many areas, including biotechnology, nanomedicine and tissue engineering. It also plays a significant role in drug release, bioimaging, biomolecular sensing, biomedical engineering and biomedical engineering. GO’s specific surface area is larger than other planar or spherical nanomaterials. It can also be easily modified and has a good biocompatibility. GO and alkene derivatives will have corresponding biological effects due to their surface charges, sizes, lateral dimensions, and surface chemistry. Further research is needed to determine GO’s biosafety. Material science will enable us to use low toxicity materials and better biocompatibility to modify GO. We can prepare GO with stable and clear properties, safe structure, non-toxic, and so be able to use it as a safe, effective, and efficient medical material.

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