Friday, December 2, 2011

The Application of graphite oxide powder

graphite oxide powder is called graphite oxide, graphitic oxide or graphitic acid, is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers.The maximally oxidized bulk product is yellow solid with C:O ratio between 2.1 and 2.9.Partial reduction can be achieved by treating the suspended graphene oxide with hydrazine hydrate at 100oC for 24 hours, or by exposing graphene oxide to hydrogen plasma for a few seconds. However, the conductivity of the graphene obtained by this route ranges between 0.05 to 2 S/cm, and the charge mobility is between 2 to 200 cm2/Vs for holes and 0.5 to 30 cm2/Vs for electrons. These values are much greater than the oxide’s, but still a few orders of magnitude lower than those of pristine graphene. Inspection with the atomic force microscope shows that the oxygen bonds distort the carbon layer, creating a pronounced intrinsic roughness in the oxide layers which persists after reduction. These defects also show up in Raman spectrum of graphene oxide.
graphite oxide powder use of the invention of nano-graphene oxide as an antimicrobial to restore the application materials can be nano-graphene oxide as an additive reduction is made with antimicrobial properties of antibacterial coating made ​​of a product or material, used in medical and daily life.Dispersed in organic solvents, oxidation behavior graphène different effects. Such as oxidized graphite manufacturing, N-méthyl-2-pyrrolidone N-diméthylformamide dispersed, tétrahydrofurane, built with ethylene glycol.



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