▎ 摘　　要

A kinetic study of graphene oxide (GO) synthesis using electrochemical exfoliation of graphite in the acidic and alkaline electrolyte has been carried out. The effects of temperature (301-333 K), sulfuric acid concentration (0.3-0.6 M), pH (0.3-11.2), current density (12-40 mA/cm2), and graphite density (1.72- 1.92 g/cc) on the rate of GO formation have been examined. The GO exfoliation rate was found to be unaf-fected by graphite density; therefore, all the kinetic was studied with the graphite density of 1.82 g/cc. The GO exfoliation rate increased with a sulfuric acid concentration in the electrolyte. The temperature was seen to enhance the rate of GO synthesis. The activation energy of GO exfoliation was found to be 33.53 kJ/mol in a temperature range of 301-333 K. Based on the findings the mechanism was proposed and the rate law was deduced.. The surface reaction of anions during intercalation and de-intercalation in the interstices of graphite has been found to be the rate-controlling step. Synthesized GO was character-ized with transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The kinetic model has been developed to fit the GO exfoliation rate within a pH range of 0.3-1.1.(c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.