Synthesis and characterization of graphene oxide flakes for transparent thin films

  • R.G. Abaszade Institute of Physics, Azerbaijan National Academy of Sciences
  • S.A. Mamedova Institute of Physics, Azerbaijan National Academy of Sciences
  • F.G. Agayev Azerbaijan State Oil and Industry University
  • S.I. Budzulyak V.E. Lashkarev Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
  • O.A. Kapush V.E. Lashkarev Institute of Semiconductor Physics NAS of Ukraine
  • M.A. Mamedova National Aerospace Agency, Ministry of Defence Industry of Azerbaijan Republic
  • A.M. Nabiyev Baku State University
  • V.O. Kotsyubynsky Vasyl Stefanyk Precarpathian National University
Keywords: graphene oxide, SEM, Raman analysis, XRD, Differential Scanning Calorimetry

Abstract

We have synthesized large scale, thin, transparent graphene oxide (GO) flakes by Hummer’s method and investigated their suitability for fabrication of transparent nanocomposites. The GO flakes were comprehensively characterized by X-ray diffraction, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray analysis (EDX), Raman spectroscopy and Differential Scanning Calorimetry (DSC). X-ray diffraction displayed the peak of graphene oxide at 9°degree, which is characteristic peak of GO in agreement with the literature results. Scanning Electron Microscopy images revealed that thin, transparent, flake form GO with 14,8 µm lateral size and 0,31µm thickness were synthesized. The comparison with literature results show that for the first time, our group could synthesize large scale, thin and more transparent GO flakes by simple Hummer’s method using simple dispersed graphite. EDX measurements indicate the formation of layered structure with oxygen containing functional groups. The intensity ratio between D and G peaks in the Raman spectra proves that less defective GO flakes have been synthesized. The solution ability of the synthesized material indicate that high quality GO flakes were synthesized, which make them effective soluble material due to oxygen containing groups formed on the graphene plane during synthesis process.DSC results shows that these flakes are thermally stable till 200°C.  Due to high solubility properties, large scale and transparency they can be very useful in fabrication of high optical transparent nanocompoties for replacement indium tin oxide transparent conductors in solar panels, biomedical applications and microwave absorbers for electromagnetic interference (EMI) environmental protection.

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Published
2021-09-28
How to Cite
[1]
AbaszadeR., MamedovaS., AgayevF., BudzulyakS., KapushO., MamedovaM., NabiyevA. and KotsyubynskyV. 2021. Synthesis and characterization of graphene oxide flakes for transparent thin films. Physics and Chemistry of Solid State. 22, 3 (Sep. 2021), 595-601. DOI:https://doi.org/10.15330/pcss.22.3.595-601.
Section
Scientific articles (Physics)

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