I prepared graphene oxide by modified Hummer's method. I would like to synthesize graphene from graphene oxide for a biosensor. but nearly every article is also performing graphene synthesis using graphene oxide solution.
Hello
Graphene, although it has high conductivity and charge carrier properties but is hydrophobic in nature. This limits its application. Therefore, it is modified by oxidising the graphene into graphene oxide (GO). GO is hydrophilic in nature but its conductivity is too low.
GO is reduced using different synthetic routes like chemical, electrical or high temperature to obtain reduced graphene oxide (r-GO).
So r-GO has similar properties like Graphene but with more defects due to presence of oxide functional groups in/on it. Hence, you can ho ahead with your biosensor experiment using r-GO.
PS: If you want to synthesize Graphene then go for Chemical Vapour Deposition (CVD) method which is widely used to get Few layers Graphene on metallic surface.
Regards.
Hello
Graphene, although it has high conductivity and charge carrier properties but is hydrophobic in nature. This limits its application. Therefore, it is modified by oxidising the graphene into graphene oxide (GO). GO is hydrophilic in nature but its conductivity is too low.
GO is reduced using different synthetic routes like chemical, electrical or high temperature to obtain reduced graphene oxide (r-GO).
So r-GO has similar properties like Graphene but with more defects due to presence of oxide functional groups in/on it. Hence, you can ho ahead with your biosensor experiment using r-GO.
PS: If you want to synthesize Graphene then go for Chemical Vapour Deposition (CVD) method which is widely used to get Few layers Graphene on metallic surface.
Regards.
You have GO (oxygen intercalated inside Gr layers) in power form. Now you need to remove these O2 atoms to get Gr.. This is called reduction method.
- People generally use solution routes for this reduction process mainly due to two major advantages. 1) remove O2 by chemical reaction, 2) breakdown aggregated/large GO sheets into individual Gr sheets by ultra-sonication.
- Since solution route is very effective and have other advantages, so its very popular.
- If you are looking for non-solution route, you can try annealing your GO power at very high temperature under vacuum. Then you can get Gr powder from GO powder directly. But in-order to reduce O2 atoms completely, you may need to go very high temperature, as high as 1900 C and vacuum pressure as low as E-6 Torr and need to perform this annealing at least 12 to 18 hrs depending on your sample amount...
Hope the above give you some idea to start ur findings...
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