Abstract
In this work, photocatalytic behavior of CuO@SiO2 core shell nanocomposites (CuO@SiO2 CSNs) is reported. The formation and structure of the prepared samples were confirmed using powder X-ray diffraction (XRD), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and High resolution transmission electron microscopy (HRTEM) techniques. UV analysis revealed that the incorporation of SiO2 onto CuO resulted in a notable decrease in the bandgap energy from 3.2 eV to 2.8 eV, along with a reduction in the rate of electron-hole recombination and in consequence of that CuO@SiO2 CSNs demonstrated an impressive degradation rate of 92% for Rhodamine B (Rh B), while CuO Nanoparticles (NPs) exhibited a relatively lower rate of 80%. The BET surface area analysis revealed that CuO@SiO2 CSNs had a greater surface area of 68.418 m³/g as opposed to 9.364 m³/g for CuO NPs, which contributed to the former's remarkable catalytic performance.
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