In situ X-ray powder diffraction studies of the synthesis of graphene oxide and formation of reduced graphene oxide
| Autor: | Mie Møller Storm, Rune E. Johnsen, Poul Norby |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Materials science Intercalation (chemistry) Oxide Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Hummers method law.invention In situ Inorganic Chemistry chemistry.chemical_compound law Materials Chemistry Reduced graphene oxide Physical and Theoretical Chemistry Crystallization Graphene oxide Graphene X-ray 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials X-ray diffraction chemistry Thermal reduction X-ray crystallography Ceramics and Composites 0210 nano-technology Powder diffraction |
| Zdroj: | Storm, M M, Johnsen, R E & Norby, P 2016, ' In situ X-ray powder diffraction studies of the synthesis of graphene oxide and formation of reduced graphene oxide ', Journal of Solid State Chemistry, vol. 240, pp. 49-54 . https://doi.org/10.1016/j.jssc.2016.05.019 |
| Popis: | Graphene oxide (GO) and reduced graphene oxide (rGO) are important materials in a wide range of fields. The modified Hummers methods, for synthesizing GO, and subsequent thermal reduction to rGO, are often employed for production of rGO. However, the mechanism behinds these syntheses methods are still unclear. We present an in situ X-ray diffraction study of the synthesis of GO and thermal reduction of GO. The X-ray diffraction revealed that the Hummers method includes an intercalation state and finally formation of additional crystalline material. The formation of GO is observed during both the intercalation and the crystallization stage. During thermal reduction of GO three stages were observed: GO, a disordered stage, and the rGO stage. The appearance of these stages depends on the heating ramp. The aim of this study is to provide deeper insight into the chemical and physical processes during the syntheses. |
| Databáze: | OpenAIRE |
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