Photocatalytic degradation of rhodamine B utilizing core/shell structures (Zn0.3Mn0.7Fe2O4@AgVO3) under the irradiation of visible light: Synthesis, characterization, and its application.

Using a co-precipitation method, this work created a nanocomposite of visible-light-driven core/shell Zn_0.3Mn_0.7Fe₂O₄ @AgVO₃. Fluorescence microscopy, scanning electron microscopy, "field emission scanning electron microscopy," "X-ray diffraction," "photoluminescence," "diffuse reflectance spectroscopy," "vibrating sample magnetometry," and transmission electron microscopy were among the analytical techniques used to study the nanocomposite's physicochemical properties. The photocatalytic activity (PCA) of the nanocomposite was evaluated in relation to the degradation of rhodamine-B (Rh B) by exposing it to visible light irradiation (VLI). The optimal core/shell Zn_0.3Mn_0.7Fe₂O₄@AgVO₃ nanocomposite showed far more noticeable photocatalytic degradation than the naked AgVO₃ after 180 minutes of light exposure. The nanocomposite exhibited approximately three times the photocatalytic degradation of the silver vanadate, in particular. It can be concluded that core/shell nanocomposite has a low recombination rate because of the lowered photoluminescence (PL) intensity. Consequently, this characteristic leads to an enhancement in the efficiency of separating photo-excited charge carriers. The experimental findings suggested that the core/shell Zn_0.3Mn_0.7Fe₂O₄@AgVO³ nanocomposite exhibit promising characteristics as suitable materials for the remediation of wastewater in industrial and urban environments around (99.9%). Furthermore, a plausible mechanism for the degradation of Rh B was studied, demonstrating the involvement of the generated hydroxyl radical (•OH) and superoxide radical anion (O₂•–) radicals in the degradation process of Rh B on the aforementioned nanocomposite. The investigation of (TOC) and (COD) was conducted to examine the degradation process. Additionally, kinetic modelling was carried out for synthesized composite. The findings indicated that the synthesized core/shell structure method, specifically the combination of 90% wt AgVO₃ and 10% wt Zn_XMn_(1-X) Fe₂O₄, exhibit remarkable degrading capabilities towards organic contaminants. [ABSTRACT FROM AUTHOR]