Synthesis and Characterization of Few-Layer Reduced Graphene Oxide Nanosheet by Modified Hummer’s Method

Authors Jagat Pal Singh1 , G.C. Joshi2

1Department of Physics, G.B. Pant University of Agri. & Tech., 263145 Pantnagar, India

2RITL, G.B. Pant University of Agri. & Tech., 263145 Pantnagar, India

Issue Volume 15, Year 2023, Number 2
Dates Received 07 December 2022; revised manuscript received 14 April 2023; published online 27 April 2023
Citation Jagat Pal Singh, G.C. Joshi, J. Nano- Electron. Phys. 15 No 2, 02003 (2023)
PACS Number(s) 61.05.С –, 81.05.ue
Keywords X-ray diffraction (19) , Hummer, Band gap (29) .

The present study reveals that synthesized Graphene oxide (GO) by using a modified Hummer’s method and then by applying heat treatment yielded reduced Graphene oxide (rGO). The phase purity and crystal structure of the synthesized rGO was determined using X-ray diffraction (XRD). Which confirms the production of reduced graphene oxide. Also, Scherrer's equation was used for average crystallite size calculation. Fourier transform infrared spectroscopy (FTIR) was used to identify the molecular vibrations and functional groups which confirms the presence of C=C and C-O bonds in the sample. The surface morphology of the produced samples was investigated using a field emission scanning electron microscope (FESEM), which revealed that the surface of the rGO sheet is smooth. The optical characteristics are measured using a UV-Visible spectrometer. The band gap is calculated by the tauc plot analysis. the band gap of the sample is found to be 1.92 eV. In this study, efforts were attempted to manufacture reduced graphene oxide nanosheet by modified hummer’s method.

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