Methane dissociation process in inductively coupled Ar/H 2 /CH 4 plasma for graphene nano-flakes production
| Autor: | Marc Leparoux, Mehari Asfaha, Antaryami Mohanta, Briac Lanfant |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics and Astronomy (miscellaneous) Hydrogen Graphene Nucleation Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Dissociation (chemistry) Methane law.invention Volumetric flow rate chemistry.chemical_compound chemistry 13. Climate action law 0103 physical sciences Dehydrogenation 0210 nano-technology Electron ionization |
| Zdroj: | Applied Physics Letters |
| ISSN: | 0003-6951 |
| DOI: | 10.1063/1.4977568 |
| Popis: | The role of hydrogen and methane dissociation process in induction plasma synthesis of graphene nano-flakes (GNF) is studied by the optical emission spectroscopy of Ar/H2/CH4 plasma. The condensation of C2 species formed due to methane decomposition produces GNF, which depends on pressure. Electron impact and dehydrogenation processes dissociate methane, which promotes and hinders the GNF production, respectively. The effect of hydrogen is insignificant on quality, size and morphology of the GNF. The CH4 flow rate has no influence on particle temperature but has effect on cooling rate at the point of nucleation and, therefore, on production rate and thickness of GNF. |
| Databáze: | OpenAIRE |
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