Work

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

Year: 2025

Type: article

Abstract: Graphene oxide (GO) and reduced graphene oxide (rGO) were obtained from graphite foil wastes (GFWs) by oxidation with KMnO 4 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.

Source: Materials science forum

DOI: 10.4028/p-x6slr5

Authors: Ketevan Sarajishvili, Shalva Kekutia, Jano Markhulia, Vladimer Mikelashvili, Natia Barbakadze, Tamar Korkia, Irma Jinikashvili, Otar Tsagareishvili, Levan Chkhartishvili, Roin Chedia

Institutions: Georgian Technical University, Tbilisi State University, Tbilisi State Medical University

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: hybrid

OpenAlex ID: W4415949014

FWCI:

Cites: 28

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Related to: 10