The binary heterojunction of MgFe₂O₄-Co₃O₄ nano-photocatalyst was constructed by sonochemical method. HRTEM represented the attachment of MgFe₂O₄ and Co₃O₄. UV–vis DRS reveals the bandgap shift (MgFe₂O₄ = 1.75 eV; Co₃O₄ = 2.35 eV) to 2.09 eV for MgFe₂O₄-Co₃O₄ that promoted white light harvesting. XPS and EDAX were performed to confirm the presence of Mg, Fe, Co and O. FTIR analysis indicates the tetrahedral and octahedral oxygen-metal peaks. The dye degradation rate of MgFe₂O₄-Co₃O₄ was boosted 7 and 11 times than MgFe₂O₄ and Co₃O₄ respectively. The MgFe₂O₄-Co₃O₄ showed excellent recycling stability and reusability. The particles found to be highly active under visible light irradiation and ·OH showed major contribution in dye degradation. The MgFe₂O₄-Co₃O₄ greatly affected the growth of Escherichia coli and Bacillus subtilis that proved its excellent antibacterial property. Therefore, MgFe₂O₄ decorated Co₃O₄ can be considered as a useful tool for multiple applications including environmental remediation by photocatalysis and as antibacterial agents.

采用声化学法构建了MgFe ₂ O ₄ -Co ₃ O ₄纳米光催化剂的二元异质结。HRTEM 表示 MgFe ₂ O ₄和 Co ₃ O ₄的附着。的UV-vis DRS揭示了带隙偏移（MgFe ₂ ø ₄  = 1.75电子伏特;钴₃ ø ₄  = 2.35电子伏特）至2.09电子伏特为MgFe ₂ ö ₄ -Co ₃ ö ₄这促进了白光收集。进行 XPS 和 EDAX 以确认 Mg、Fe、Co 和 O 的存在。FTIR 分析表明四面体和八面体氧金属峰。的染料降解速率MgFe ₂ ö ₄ -Co ₃ ö ₄被升压7个11倍，比MgFe ₂ ö ₄和Co ₃ ö ₄分别。MgFe ₂ O ₄ -Co ₃ O ₄表现出优异的循环稳定性和可重复使用性。发现在可见光照射下具有高活性的颗粒和·OH 显示出对染料降解的主要贡献。MgFe ₂ O₄ -Co ₃ O ₄极大地影响了大肠杆菌和枯草芽孢杆菌的生长，证明了其优异的抗菌性能。因此，MgFe ₂ O ₄装饰的Co ₃ O ₄可以被认为是多种应用的有用工具，包括光催化环境修复和抗菌剂。