| 초록 |
Graphene Oxide (GO), formerly called graphitic oxide, is a 2D nanocarbon of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers. The bulk material disperses in basic solutions to yield monomolecular sheets by analogy to graphene, the single-layer graphite. GO potentially has promising applications. The chemistry of GO and its response to external stimuli such as temperature in the water solution are not well understood and only approximately controlled. Here, a systematic experimental analysis study shows that GO produced by oxidizing epitaxial graphene through the modified Hummers method is a metastable material whose structure and chemistry evolve at from room temperature to elevated temperature, GO reaches a nearly stable some reduced C/O ratio. |
