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Simplified production of graphene oxide assisted by high shear exfoliation of graphite with controlled oxidation

Abstract

In this work, a scalable method was developed to produce graphene oxide (GO) via high-shearing of pre-oxidized graphite. Various oxidation states of pre-oxidative graphite were obtained at different oxidation periods through a modified Hummers’ method. The oxidized graphite flakes were investigated with the aids of X-ray diffractometry, Fourier transformed infrared spectroscopy, and Raman spectroscopy. Instead of a prolonged oxidation period of more than 24 hours, the graphite sample that underwent 6 hours of oxidation was selected for the high-shearing process to obtain exfoliated GO. The transmission electron microscopy and atomic force microscope results confirmed that large-area and single-layer GO can be produced by the high-shear exfoliation method with pre-oxidized graphite flakes. This modified procedure enables the remarkably simple, fast, and effective production of preparing high-quality GO.

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Publication details

The article was accepted on 05 Feb 2018 and first published on 06 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04911K
Citation: New J. Chem., 2018, Accepted Manuscript
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    Simplified production of graphene oxide assisted by high shear exfoliation of graphite with controlled oxidation

    K. Y. Chong, C. H. Chia, S. W. Chook, S. Zakaria and D. Lucas, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04911K

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