Simple Synthesis of Large Graphene Oxide Sheets via Electrochemical Method Coupled with Oxidation Process.

ABSTRACT: In this paper, we report a simple two-step approach for the synthesis of large graphene oxide (GO) sheets with lateral dimensions of ≈10 μm or greater. The first step is a pretreatment step involving electrochemical exfoliation of graphite electrode to produce graphene in a mixture of H₂SO₄ and H₃PO₄. The second step is the oxidation step, where oxidation of exfoliated graphene sheets was performed using KMnO₄ as the oxidizing agent. The oxidation was carried out for different times ranging from 1 to 12 h at ∼60 °C. Prepared GO batches were characterized using a number of spectroscopy and microscopy techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM),

SUBMITTER: Kumar N 

PROVIDER: S-EPMC6645570 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature