Abstract
The Bi2WO6, Bi2WO6@GO, SiO2/Bi2WO6, and SiO2/Bi2WO6@GO nanocomposites were synthesized using a simple process. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR), EDX mapping investigations confirmed the successful synthesis, related chemical bonding, and elements in the structure. According to the TEM and FESEM images, composite nanoparticles consisting of cubic-like Bi2WO6 and regular spherical-like particles of SiO2 between the GO sheets. The strong emission color of green under ultraviolet excitation was obtained. The radiation sensitivity of the SiO2/Bi2WO6@GO nanocomposite under the 241Am alpha source was the best compared with other samples. It was observed that the incorporation of SiO2 and reduced graphene oxide in composite structures can lead to further sensitivity of ionizing radiation and luminescence intensity at room temperature. Furthermore, prepared SiO2/Bi2WO6 NPs showed a high decolorization efficiency of MB dye (98.2%) under UVA irradiation for 100 min. These results present a promising potential for applications in photonic devices.
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