Our customer services representatives are available 24 hours a day, from Monday to Sunday.
Aghamohammadi, Hamed, Akbar Heidarpour, and Samad Ghasemi. FlatChem 22 (2020): 100172.
This study presents an electrochemical strategy for the one-step synthesis of fluorinated graphene nanoplatelets (FGNPs) via anodic exfoliation of graphite in hydrofluoric acid-based electrolytes. Using pencil graphite rods as electrodes, exfoliation and simultaneous fluorination were performed in 10 wt% HF and in a composite electrolyte containing 10 wt% HF with 2.5 g/L TiO₂ nanoparticles, under voltages of 2.5, 5.0, and 10.0 V.
FESEM, EDS, AFM, FTIR, Raman, and XRD analyses confirmed the formation of few-layer graphene with surface-bound fluorine atoms. Notably, increasing the applied voltage produced thinner sheets but with fewer fluorine-containing defects, indicating a voltage-dependent balance between exfoliation efficiency and fluorination degree. The TiO₂ nanoparticles likely contributed to additional surface functionalization via the formation of soluble TiF₆⁻ species in HF, although the exact mechanism requires further study.
Following exfoliation, the products were ultrasonicated, washed, and filtered to yield high-purity FGNPs. This method provides a scalable and relatively mild route to functionalized graphene derivatives.
Overall, this case highlights how hydrofluoric acid electrolytes, with or without TiO₂, can be effectively employed to synthesize fluorinated graphene nanoplatelets with tunable structural and chemical properties, promising for applications in catalysis, electronics, and composite materials.
Online Inquiry
