On the other hand, with increasing oxygen-containing functional groups in GO, the content of oxidizedGO-type part increases but that of non-oxidized graphite decreases
in whole materials as mentioned above.
However, the interaction modes between GO and MB are essentially different in various regions.
In non-oxidation region, MB molecule is parallel stacking on graphite plane through hydrophobic – interactions [23–25], but it vertically stands on GO via hydrophilic electrostatic interactions in oxidation region.