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

Kai Yin Chong, Chin Hua Chia, Soon Wei Chook, Sarani Zakaria, David Lucas

Research output: Contribution to journalArticle

2 Citations (Scopus)

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-oxidized graphite were obtained following different oxidation periods through a modified Hummers' method. The oxidized graphite flakes were investigated by X-ray diffractometry, Fourier transform 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 microscopy 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 high-quality GO.

Original languageEnglish
Pages (from-to)4507-4512
Number of pages6
JournalNew Journal of Chemistry
Volume42
Issue number6
DOIs
Publication statusPublished - 1 Jan 2018

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Graphite
Oxides
Graphene
Oxidation
Shearing
X ray diffraction analysis
Fourier transform infrared spectroscopy
Raman spectroscopy
Atomic force microscopy
Transmission electron microscopy

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

Cite this

Simplified production of graphene oxide assisted by high shear exfoliation of graphite with controlled oxidation. / Chong, Kai Yin; Chia, Chin Hua; Chook, Soon Wei; Zakaria, Sarani; Lucas, David.

In: New Journal of Chemistry, Vol. 42, No. 6, 01.01.2018, p. 4507-4512.

Research output: Contribution to journalArticle

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