Sustainable gamma irradiation strategy for GO and rGO modification: Impact on electromagnetic interference shielding efficiency
Résumé
Electromagnetic interference (EMI) has emerged as a significant issue in contemporary electronic systems, particularly within aerospace, defense, and communication technology. Graphene-derived materials, including graphene oxide (GO) and reduced graphene oxide (rGO), present remarkable potential for lightweight, flexible, and EMI shielding solutions owing to their adjustable electrical conductivity and structural integrity. This study introduces an eco-friendly method for adjusting the EMI shielding effectiveness (EMI SE) of free-standing films made from GO and rGO by controlled gamma irradiation at low (50 kGy) and high (300 kGy) doses, conducted in two types of media: air and isopropyl alcohol (IPA). The structural alterations generated by irradiation were characterized by Raman and Infrared spectroscopies, X-ray diffraction (XRD), scanning electron microscopy (SEM), and contact angle measurements, indicating changes in defect density, surface roughness, and hydrophilicity. Results indicate that gamma irradiation can precisely adjust the oxidation/reduction equilibrium, hence boosting conductivity in rGO and improving interfacial polarization in GO. Remarkably, rGO films exposed to air demonstrated exceptional EMI SE values above 20 dB in the X-band (8–12 GHz), signifying their suitability for advanced shielding applications. This research illustrates the effectiveness of gamma irradiation as an environmentally friendly, scalable method for modifying the characteristics of graphene-based materials, facilitating their incorporation into advanced aeronautical and electronic equipment.
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Cite 10.5281/zenodo.15593182 Jeu de données Prekodravac Filipović, J., Yasir, M., Bajuk-Bogdanovic, D., Milovic, M., Milenkovic, M., Kleut, D., Haddadi, K., saeed, warda, & Jovanovic, S. (2025). Sustainable Gamma Irradiation Strategy for GO and rGO Modification: Impact on Electromagnetic Interference Shielding Efficiency [Data set]. Zenodo. https://doi.org/10.5281/ZENODO.15593182
Data can be found on Zenodo.com. The doi is included in the manuscript 10.5281/zenodo.15593182