To prospect the generality of the process, three commercial sources of graphene nanoplatelets (GNP) were functionalized using the Geh platform. As we do not believe it's relevant for the process, we do not reveal their names, but their structural properties, carbon material quality-related properties, and elemental analysis are summarized in Tables and. We must highlight that the three graphene sources used below were tested and two of them yielded good quality products (GNP 1 and GNP 3), while GNP 2 led to less reliable and lower quality products (dramatic decrease in selectivity). The results presenting the different levels of oxidation were focused on GNP 3 for practicality.