I am exploring the effect of cross-linking between the graphene oxide nanosheets by mono and multivalent cations. How a metal ion reacts with GO nanosheets and what chemical changes it will induce in GO structure?
Graphene oxide possesses some functional moieties, such as hydroxy, carboxy, epoxy and alkene, which have not strong ligation ability to metal ions resulting unstable/reactive metal-GO complex. The formed complex can easily participate to any stronger ligand substitution or exchange reaction with solvent molecules, such as acetonitrile. In addition, the molecular structure of GO is much bulkier than a simple ligand resulting greater ligand-ligand interactions/repulsions diminishes the stability of metal-GO complex. The effects of addition of metal ions to the GO dispersion can be monitored by EDX, FTIR and UV-vis techniques.
Dear Abhijeet Ojha
Graphene oxide is a an amphiphilic material with a negative zeta potential value that is dispersable in water. Depending on the method that you have synthesized your material, you will have different oxygen groups types. My recommendation is that first of all, test the impact of you interaction between this SFG and your ions with the Zeta Potential Values. After that a quick response to your experiment, FT-IR ATR would be a good possibility. Also, if you want to go further with your experiments, a XPS measurement would be really interesting for you to check how the different SFG have changed after the interaction, paying attention to the O1s spectra and the elemental analysis.
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