FRACTIONATION OF GRAPHENE OXIDE ON THE BASIS OF OXIDATION, SHEET SIZE, AND SHEET STACKING

摘要

Graphite oxide (GO), as the name suggests, is an oxidation product of graphite. The oxidation is often done to aid the exfoliation and dispersion of graphitic sheets in water [1]. Yet despite extensive research into graphene oxide, there is currently no routine method for the global characterization or fractionation of the highly disperse material produced by the oxidation of graphite. We have recently found that the degree of oxidation of graphene sheets has a direct correlation to their ability to stabilize oil-in-water emulsions, and have used this finding as the basis for such a characterization and fraction procedure.