Reduced Graphene Oxide Via Green Route Exposure of Gamma (γ) Ray for Surface Morphological Investigation
Journal Title: Archives of Nanomedicine: Open Access Journal - Year 2018, Vol 1, Issue 2
Abstract
γ-ray radiation was used to reduce graphene oxide thin films to partially reduced graphene oxide films at ambient conditions. Micro-Raman spectroscopy showed that irradiation of GO with γ-rays did not change the structure of graphene. The γ-rays are only active on the oxygen functional groups bonds because they are short and highly energized wavelengths. γ-rays penetrate the C-C lattice isotropically hence sustaining the graphene layer structure. This results in transparent and intact r-GO thin films with no structural defects. The defects on the structure would result to the opaqueness of the C-C lattice hence compromising the transparency of the material. The Scanning electron microscopy, Transmission Scanning electron, Fourier transform infrared and Raman spectrometry are presented. Indium Tin oxide (ITO) has been for so many years used as a transparent and conductive material on our mobile phones and television screens. However, since ITO is expensive and environmentally harsh it is therefore, critically important to come up with an alternative material that will replace it. This material should be environmentally friendly, cost effective and much more efficient and accessible. Graphene which is a competitive candidate is atomically thick, two-dimensional platelets featuring carbon atoms in a honeycomb arrangement. These sp2-hybridized sheets of carbon possess a host of desirable properties, including high mechanical stiffness (1 TPa) [1-2], good thermal conductivity (5000Wm_1 K_1) [3-6], and excellent charge carrier mobility (250 000cm2 V_1 s_1) [3]. As such, graphene has been studied for use in a variety of applications that exploit these properties [7-10] ranging from gas sensors [6] to lithium-ion battery electrodes [11- 14] as well as transparent conducting oxide (TCOs) type electrodes. Current reduction methods for producing colloidal graphene for graphene based electrodes from graphene oxide typically afford Nano sheets with high C/O ratios (∼10) [15] that exhibit good electrical conductivity and optical transparency.
Authors and Affiliations
Force Tefo Thema
Keywords
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- EP ID EP582743
- DOI 10.32474/ANOAJ.2018.01.000106
- Views 79
- Downloads 0
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