Wednesday, January 4, 2012

How to Buy graphene oxide

graphene oxide
The graphite oxide , formerly known as oxide or graphitic acid is a compound of carbon , oxygen and hydrogen in varying proportions by graphite obtained with strong oxidizing agents. The bulk material is oxidized to a yellow solid with a C: O 2.1 to 2.9 , which retains the layered structure of graphite , but with a distance much larger and irregular.
The bulk material is dispersed in the basic solutions to monomolecular sheets to produce a graph similar to graphene known , form a single layer of graphite. Graphene sheets were used to prepare a paper as a solid material , and have recently attracted considerable interest as a possible intermediary graph. But by 2010 this target in the distant future , this method since graphs with many chemical and structural defects .
With hydrazine hydrate suspension to reduce some of the graphite oxide 100 ° C, 24 hours  , or by hydrogen peroxide plasma map some of the second action ,  or pulsed xenon flash light is strong .  However , this approach will be less than 10 S / cm conductivity curve  and charge from a 200 cm2 / (V · S) orifice , from .5 to 30 cm2 / (V · S) for the electrons. These height values ​​as oxides , but there are smaller scale than the original graph several orders of magnitude lower . Atomic force microscopy showed that the carbon – oxygen layer is distorted , it ‘s a significant business within the oxide layer thickness of the rough , reduced after . These errors occurred in the Raman spectra of graphene .
 
 
 

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