I have GO solution with me and I would like to obtain single layer GO by dissolving it in water, using sonication and finally spin coating. Can someone please suggest the concentration of GO in water and the time for sonication?
However, you can only obtain few layer of graphene, maybe including some single layer, but you never get only single layer of graphene by this kind of method.
Thanks for your valuable comments. From articles I found that the typical concentration of GO in water used was 1mg/mL. Some one please suggest me what should be the sonication time and parameters for spin coating the solution on a glass substrate to get few layer thick GO?
if you have a sonication bath, sonication of 40 mL in a small vessel for 5 min would be enough. and i would use 0.01 mg/mL for spin coating. good luck!