Graphene oxide synthesis and characterizations as a carbonaceous nanoparticle by using modified hummers’ method [electronic resource]
Language: English Summary language: Arabic Publication details: 2023Description: 537 - 552 pUniform titles:- Egyptian journal of soil science, 2023 v. 63 (4) [electronic resource].
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Articles
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Main | ART EJSS V63 No4 7 (Browse shelf(Opens below)) | Available |
Includes bibliographic reference
The scientific community has been more interested in nanomaterials based on graphene because of their distinctive chemical and physical characteristics. Recently, agricultural fields have routinely employed graphene oxide (GO). This study aims to produce graphene oxide using a modified Hummers method without sodium nitrate, using an environmentally friendly approach. The process involves the chemical oxidation of commercial graphite powder into graphene oxide using the modified Hummer's method. Also, the current study included the characterization of graphene oxide (GO) by X-ray diffraction (XRD), ultraviolet-visible spectrometer (UV-vis), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR), atomic force microscopy (AFM), and elemental analysis (EA) were all used in the GO characterization. GO was evaluated using TEM images, which revealed that the GO sheets exhibited single and double lamellar layer structures with irregular forms and a thickness of 23 nm. The XRD patterns indicated that the GO peak centered at 2θ value 24º corresponds to an interplanar distance of carbon atoms arranged in (002) hexagonal layers; the interlayer spacing is approximately 8.61 Å according to the Scherrer equation. The oxygen-containing functional groups' presence in GO films like hydroxyl, carboxyl, epoxy, carbonyl, and C=C bunches was explained by a Fourier-change infrared spectrum analyzer (FT-IR) due to graphite oxidization in GO without twisting in the graphite layer structure. According to EA findings, the GO sheet's C element content was approximately 47.15 percent, O was 51.8%, H was less than 0.01%, and N was 1.02%. The UV-VIS spectrometer study revealed that the GO sheet exhibited an excellent optical reaction. The thickness and sidelong shape study of graphene oxide sheets by using atomic force microscopy (AFM). The SEM micrographs of GO obtained using modified Hummers handling demonstrate that the GO is made of two-dimensional sheets.
Keywords: Graphite; graphene oxide; modified Hummers’ method; structure characteristic.
Summary in Arabic
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