Sonochemical synthesis and characterization of La₂FeMnO₆ nanostructures and their application as photocatalysts for degradation of water-soluble organic pollutants under visible light

Increasing levels of environmental pollution have highlighted the need for photocatalysts that can efficiently decompose both synthetic and natural contaminants, such as dyes, in the treatment of wastewater. By employing a Sonochemical technique, we synthesized La₂FeMnO₆ (LFMO) nanoparticles that exhibit reactivity to visible light. These nanoparticles serve to decompose Erythrosine, an organic contaminant. A range of factors, such as various alkaline solutions, were employed alongside different ultrasound power and durations, to assess their impact on the purity and particle size of LFMO nanoparticles. To the best of our knowledge, there is currently no research focusing on LFMO nanoparticles synthesized through the Sonochemical method, particularly concerning their effectiveness in degrading dyes under visible light exposure. The findings indicated that en was the optimal option for producing the smallest and most uniform particles. It is recommended to apply 60 W of power for 10 min during sound treatment to achieve a clean result. We evaluated the effectiveness of the product by assessing its ability to eliminate color from three dyes—Erythrosine, Eriochrome black T, and Malachite green—under visible light conditions. Erythrosine exhibited the highest degradation rate, reaching 76.06 %. Alternatively, Malachite green showed minimal degradation, with a breakdown rate of 12.28 %. Making highly active LFMO nanostructures for photocatalysis using simple and fast sonochemical methods could help clean the environment effectively.