Wednesday, November 30, 2011

What is graphite oxide

graphite oxide 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 color of graphite oxide  remains yellow, water-soluble is very good, no precipitation. Content of dissolved more than 99% single, micro-chip the size of 1 to 5 microns, the thickness of about 0.8 to 1.2 nm. This product has many advantages:1. preparation of clear, mature technology, easy to write articles for scientific research;2. good water solubility, sheet size, uniform, controllable;3. no Suixiao particles, high-temperature graphene oxide powder prepared by small particles and more layers curl is not conducive to experiments carried out.
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 , [ 15 ] or pulsed xenon flash light is strong . [ 18 ] However , this approach will be less than 10 S / cm conductivity curve [ 18 ] 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 .


Read  more: graphene oxide for sale

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