Thermal decomposition of graphite oxide into nanocarbons at pressures from ambient to 5 GPa has been studied by using X-ray diffraction, Raman spectroscopy and TEM. The temperature of graphite oxide decomposition at 5 GPa is close to the temperature of graphite oxide exfoliation at ambient pressure; however, materials formed are strongly dependent on pressure. High-pressure conditions favor formation of rounded graphitic nanoparticles, while exfoliation at ambient pressure results in preservation of paper-like wrinkled micrometer size sheets (with thickness of a few graphene layers) typical for pristine graphite oxide.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films