I want to prepare Graphene Nanoplatelets (GNP) solution in ethanol for a coating process. I want to achieve a well-dispersed GNP solution and I have GNP with me. I also want to make it in the least time possible. The best possible combination I found on surveying research papers was 0.05g GNP in 20 mL ethanol sonicated for 2 hours. However that is not very practical given the amount of GNP solution I require. Does anybody know of any other conc/time combination which can be achieved by ultrasonication.
One advantage is I do not require dispersion for long amount of time: maximum stability for 3 days.
It is very difficult to disperse graphene or GNP into ethonal with higher concentration in short time sonication. You can consider the modification of graphene/GNP, or add some additives to improve the dispersion.
To improve the stabilization of graphene nanoparticles in ethanol, add n-octyl benzene.
Best regards.
Hi Gu Qiao,
What is the maximum concentration (and volume) do you think I can achieve with a sonication time of say around 30 minutes? Do you know of any combination of volume and concentration?
Thanking you,
Vidit.
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