A SYSTEMATIC INVESTIGATION OF THE STRUCTURAL CHANGES IN CHEMICALLY AND THERMALLY REDUCED GRAPHENE OXIDE USING RAMAN AND XRD

Manu Priyadarshani, Kumari Neha, Rupali Rani and Rishi Sharma
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Manu Priyadarshani: Department of Physics, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
Kumari Neha: Department of Physics, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
Rupali Rani: Department of Physics, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
Rishi Sharma: Department of Physics, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India

Surface Review and Letters (SRL), 2025, vol. 32, issue 1, 1-16

Abstract: This investigation aimed to explore the characteristics of reduced graphene oxide (rGO) through a comprehensive approach. The synthesis of graphene oxide (GO) began with a customized adaptation of the modified Hummer’s method, followed by subsequent chemical and thermal reduction processes. Chemical reduction involved the use of ascorbic acid, hydrazine hydrate, and sodium borohydride, while thermal reduction occurred at various temperatures in the presence of hydrogen. The study employed a diverse array of analytical techniques to unravel the structural and chemical intricacies of the material. X-ray diffraction (XRD) revealed significant changes indicative of structural transformations. Raman spectroscopy meticulously examined defects and layer formations. Scanning Electron Microscopy (SEM) visualized the evolutionary aspects of the material’s structure. UV–VIS spectroscopy is employed to analyze the optical bandgap of the sample, and the primary importance of this study lies in its application potential for solar cells.

Keywords: Chemical reduction; graphene oxide; modified Hummer’s method; reduced graphene oxide; Raman analysis; thermal reduction; X-ray diffraction; optical bandgap (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1142/S0218625X24501051

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