Comparative Characterization of Graphene Oxides Obtained from Graphite Foil Wastes and Flake Graphite

Graphene oxide (GO) and reduced graphene oxide (rGO) were obtained from graphite foil wastes (GFWs) by oxidation with KMnO4 in the presence of concentrated sulfuric acid at 25–50°C. The resulting GOs were compared with that obtained from flake graphite under the same conditions. The samples were investigated by UV–Vis, FTIR, and Raman spectroscopy methods. Spectroscopic data, as well as EDS and XRD analyses, have shown that the GO samples obtained in both cases are almost identical. The hydrodynamic diameter and ζ-potential of both sample suspensions were also determined. The average particles size of GO(graflex) is 321.5 nm, while the particles size of GO(graphite) reaches 252 nm. The measured ζ-potential values for GO(graflex) and GO(graphite) are –31.58 and –50.04 mV, respectively. Therefore, GFWs can serve as precursor for the production of GOs.

• Publication year

  2025

• Venue

  Materials Science Forum

• Publication date

  2025-11-10

• Fields of study

  Not labeled

• Identifiers
  DOI 10.4028/p-x6SLR5
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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