Is it possible to chemically prepare graphene directly from graphite and not through the (modified) Hummers' method; i.e. first prepare graphene oxide and then reduced it to possible graphene and not reduced graphene oxide?
And what do you suggest? The use of graphite flakes with a certain mesh size, or expanded graphite? (I have read in some publications that expanded graphite facilitates the separation of the graphene layers).
I do not wish to prepare graphene by CVD (machine not available at my lab) or by the scotch-tape method.
I know that there are liquid-phase exfoliation methods published, but I want to know which route is most popular.
The ultimate aim of this preparation is to apply graphene in desalination experiments as a nano-filtration membrane.
modified) Hummers' method is well known but still you can use a other chemicals methods
Here's few papers on graphene preparation directly from graphite:
Exfoliation of Graphite into Graphene in Aqueous Solutions of Inorganic Salts (https://pubs.acs.org/doi/abs/10.1021/ja5017156)
Electrochemically exfoliated graphene as solution-processable, highly conductive electrodes for organic electronics (https://pubs.acs.org/doi/abs/10.1021/nn400576v)
Organic radical assisted electrochemical exfoliation for the scalable production of high-quality graphene (https://pubs.acs.org/doi/abs/10.1021/jacs.5b09000)
New generation graphene from electrochemical appraoches: production and applications (https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201505326)
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