IJAMCE
International Journal of Applied Mathematics in Control Engineering
Published by Qingdao University of Technology  ·  Est. 2018
Open Access Peer Reviewed
● Open Access

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In this study, graphene was prepared from natural flake graphite via secondary chemical intercalation, microwave expansion, and liquid-phase reduction. Flu- orinated graphene with different fluorine-to-carbon (F/C) ratios was then syn- thesized at various temperatures using direct gas fluorination. Characterizations by SEM, AFM, BET, XPS, and TGA showed that as the fluorination degree increased (F/C ratio from 0.344 to 1.045), the average particle size and layer number of fluorinated graphene flakes decreased, the specific surface area in- creased, and the C-F bonding transformed from semi-ionic to covalent bonds, significantly enhancing thermal stability. This study reveals the regulatory mechanism of fluorination degree on the structure and properties of fluorinated graphene (FG), providing a theoretical basis for its wide applications.

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Abstract

In this study, graphene was prepared from natural flake graphite via secondary chemical intercalation, microwave expansion, and liquid-phase reduction. Flu- orinated graphene with different fluorine-to-carbon (F/C) ratios was then syn- thesized at various temperatures using direct gas fluorination. Characterizations by SEM, AFM, BET, XPS, and TGA showed that as the fluorination degree increased (F/C ratio from 0.344 to 1.045), the average particle size and layer number of fluorinated graphene flakes decreased, the specific surface area in- creased, and the C-F bonding transformed from semi-ionic to covalent bonds, significantly enhancing thermal stability. This study reveals the regulatory mechanism of fluorination degree on the structure and properties of fluorinated graphene (FG), providing a theoretical basis for its wide applications.

Keywords:GrapheneFluorinated grapheneFluorine-to-carbon ratioGas fluorination methodPerformance characterization 1 |

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