Thanks for your attention @alok Goel Sir..

Sorry sir, what does chemical sonication means? What kind of chemical we use for that method ?

Dear Qaiser... Please elaborate chemical sonication method in detail.

I also search so many papers regarding synthesis of graphene by sonication method but I did not get the exact time limit of sonication.

can we use normal sonication method or probe sonicator.

Dear all,

Whatever is discussed in the literatures for synthesis of graphene, it is mechanical sonication to the best of my understanding...

You neednot use any chemical

Hi

Would you please tell us what is the appropriate solution?

Dear all

I also focus on sonication work these days but could not getting good result.

Can anyone suggest me appropriate synthesis process of graphene from graphite by sonicator.

Thanks in advance

Dear Denis, Thanks for your answer

I tried it with 100 hrs but problem is that, it is time taken and after 100 hr the particle size means graphene sheet size become very small.

I want to know is it possible with another solvent and with less time of sonication.

Thanks in advance

Nice discussion. @Ehtisham & @Denis can you cite papers? what is the minimum size and crystal structure you detected?

Thanks all , Such an informative answers..

Cheers

Probe sonication imparts higher energy to the graphene sheets at a faster rate there by decreasing size of graphene sheets exfoliated in the process.

sorry..can I know the function of sonication in graphene oxide synthesis? can someone tell me

Sonication will results in exfoliation 

 The tendency of solvent molecule insertion into graphite is the main factor that yields exfoliated of graphite. Generally, low power sonication can do the job if you select the right solvent.  However, to truly confirm if it is graphene or not, TEM, Raman or AFM measurements are required. 

Prof. Stengl has published the most sophisticated research about ultrasonic graphene synthesis. His methods are used today for industrial production of graphene.

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thanks a lot for the valuable answers.