Abstract
In the present work, The SiO2, and CoS2–SiO2 nanomaterials and incorporated on chitosan was developed as photocatalyst for photocatalytic degradation of toxic compound such as ethidium bromide as a hazard mutagenic pollutant. The SiO2, and CoS2–SiO2 nanomaterials were prepared using the sol–gel/sonochemical method. Therefore, the nano photocatalyst were characterized by various analytical devices such as scanning electron microscopy (SEM), X-ray diffraction and photoelectron (XRD and XPS) analysis, energy dispersive X-ray spectrometer (EDS), UV–Vis absorption spectroscopy and dynamic light scattering, in order to attain the structural properties. The average crystallite size values of SiO2, CoS2–SiO2, and CoS2–SiO2/Chitosan nanocomposites are 0.63, 40.28, and 69.75 nm, respectively. The band-gap values was obtained 8.9–2.7 eV for SiO2, CoS2–SiO2, and CoS2–SiO2/Chitosan nanocomposites, respectively. The photocatalytic performances of the three prepared nano-photocatalyst were examined by UV-light with help the photo-degradation of ethidium bromide. The CoS2–SiO2/Chitosan nanocomposites photocatalyst shows the high amount of photocatalytic degradation (96.00%) in comparison to SiO2, and CoS2–SiO2 nanomaterials. The results demonstrated that the all prepared nano-photocatalyst under UV irradiation was in pH 5 at 40 min. The antifungal and antibacterial of the SiO2, CoS2–SiO2, and CoS2–SiO2/Chitosan were examined. The CoS2–SiO2/Chitosan (high 11.00 mm inhibition zone) has appropriate antimicrobial activity compared with pure SiO2.
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The authors are grateful for the support of this research by the Islamic Azad University of Central Tehran.
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Fakhri, A., Feizbakhsh, A., Konoz, E. et al. Facile Synthesis and Characterization of CoS2–SiO2/Chitosan: The Photocatalysis in Real Samples, and Antimicrobial Evaluation. J Inorg Organomet Polym 29, 1119–1129 (2019). https://doi.org/10.1007/s10904-019-01074-7
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DOI: https://doi.org/10.1007/s10904-019-01074-7