Abstract
The quest for advanced materials in gamma radiation shielding has spurred the exploration of environmentally friendly, nanotechnology-based approaches. This study introduces a novel synthesis of Cr2O3/Bi2O3 nanocomposites (NCs) using the solution combustion method, with Aloe vera extract serving as a natural reducing agent. Comprehensive analytical characterization of the synthesized NCs was conducted using powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier-transform infrared spectroscopy (FTIR), and ultraviolet–visible (UV–Vis) spectroscopy. The gamma radiation shielding properties of the Cr2O3/Bi2O3 NCs are evaluated using a NaI(Tl) detector connected to a multichannel analyzer. Key shielding parameters, including mass attenuation coefficients, mean free path, half-value layer, tenth-value layer, energy buildup factor, and radiation protection efficiency, indicate that Cr2O3/Bi2O3 NCs are highly effective in gamma radiation shielding. The results demonstrated the feasible shielding performance of these nanocomposites across various energies within error limits of 5 %. This study highlights the potential of Cr2O3/Bi2O3 NCs as a promising, sustainable alternative to conventional shielding materials, offering enhanced gamma radiation protection with reduced environmental impact.
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