How to identify graphene oxide in a large area of polymeric membrane? I am wondering if there is some colorimetric way to do that. Is it possible?

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Yuri Mirgorod

Jéssica Ivone Viegas

You can try examining sections of the membrane with a scanning electron microscope. Graphene oxide benzene rings can be tried to be nitrated and then colorimetric analysis can be used.

Rafael Nunes Gontijo

Raman spectroscopy could give you some good insights into the GO distribution, if the polymeric membrane has a low enough Raman signal by itself.

Abdul Haleem

You can use TEM technique to confirm the presence of GO sheets in polymer network. For further confirmation, Implement Raman technique which will give you 100% conformation about the presence of GO inside polymer network.