Synthesis of Ternary Nanocomposites (Srfe12 O19/Tio2/Zno) By Sol-Gel Method for Application of Pollutant Abatement of Organic Dye Degradation Studies

The study investigates the creation of a ternary metal oxide nanocomposite (SrFe12O19/TiO2/ZnO) designed to be an effective and superior photocatalyst. This is concluded by sequentially embedding semiconductors onto an n-type semiconductor using chemical or sol-gel methods. The formational and consistency properties of the resulting sample were analyzed using a range of methods involving X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, Field emission scanning electron microscopy with Energy-dispersive spectroscopy (FESEM-EDS), UV-visible spectroscopy, Transmission electron microscopy (TEM) and Vibrating sample magnetometry (VSM). The photocatalytic activity of the ternary nanocomposite was evaluated by testing its effectiveness in degrading Methylene Blue and Rhodamine B dyes under visible light. Under sunlight, methylene blue and rhodamine B were completely degraded by the nanocomposite in 60 and 50 minutes respectively. The main reactive species responsible for the photodegradation under visible light were hydroxyl radicals (•OH) and superoxide anions (•O2-). Additionally, the small particle size, high catalytic efficiency and favorable physical and chemical properties of the SrFe12O19/ZnO/TiO2 nanocomposites contributed to their excellent reusability.