Oxidation of a Graphite Surface: The Role of Water
- Title
- Oxidation of a Graphite Surface: The Role of Water
- Author
- Bukhvalov Danil
- Keywords
- REDUCED GRAPHENE OXIDE
- Issue Date
- 2014-11
- Publisher
- AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, 권: 118, 호: 47, 페이지: 27594-27598
- Abstract
- Based on density functional calculations, we demonstrate a significant difference in oxidation patterns between graphene and graphite and the formation of defects after oxidation. Step-by-step modeling demonstrates that oxidation of 80% of the graphite surface is favorable. Oxidation above half of the graphite surface significantly decreases the energy costs of vacancy formation with CO2 production. The presence of water is crucial in the transformation of epoxy groups to hydroxyl, the intercalation with further bundle and exfoliation. In water-rich conditions, water intercalates graphite at the initial stages of oxidation and oxidation, which is similar to the oxidation process of free-standing graphene; in contrast, in water-free conditions, large molecules intercalate graphite only after oxidation occurs on more than half of the surface.
- URI
- https://pubs.acs.org/doi/10.1021/jp509659phttp://hdl.handle.net/20.500.11754/51288
- ISSN
- 1932-7447
- DOI
- 10.1021/jp509659p
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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