مشخصات پژوهش

Photocatalysis serves as an effective and environmentally friendly approach for the treatment of wastewater and water, with ZnO-based photocatalysts exhibiting significant efficacy in this area. Consequently, we present a novel method that integrates solvothermal, calcination, and hydrothermal processes to produce a ZnO/Bi2MoO6/AgFeO2 ternary photocatalyst, which has shown a remarkable photocatalytic activity in eliminating methyl orange (MO), rhodamine B (RhB), and methylene blue (MB) when exposed to persulfate ( SO5 2⁻) under visible light. The ZnO/Bi2MoO6/AgFeO2 photocatalysts facilitate the activation of SO5 2⁻ ions, thereby enhancing the degradation of pollutants under visible light exposure. In the presence of the ZnO/Bi2MoO6/AgFeO2 (20%)/SO5 2⁻ system, MB was entirely decomposed within 75 min, whereas only 39.8% of MB was eliminated using the ZnO/Bi2MoO6/AgFeO2 (20%) sample without SO5 2⁻. This indicates a synergistic effect between SO5 2⁻ activation and visible-light photocatalysis in the ZnO/Bi2MoO6/AgFeO2 (20%) system. The enhanced photocatalytic performance of this system is attributed to the activation of SO52⁻ ions by electrons, leading to the generation of sulfate radicals (⦁SO4⁻), improved charge carrier separation, and increased visible light absorption by Bi2MoO6 and AgFeO2. Ultimately, the proposed mechanism for the significantly enhanced photocatalytic activities involves multiple Z-scheme/type II heterojunctions. The findings of this study confirm that the ZnO/Bi2MoO6/AgFeO2 system is a viable visible-light-driven nanocomposite for the purification of water and wastewater.