MnFe₂O₄ spinel nanoparticles were synthesized by the sonochemical method (co-precipitation in an ultrasonic field). The Bragg diffraction peaks of the synthesized product agreed with the MnFe₂O₄ spinel reference model, and the average MnFe₂O₄ crystallite size, calculated using the Debye–Scherrer equation, was approx. 7 nm. The obtained MnFe₂O₄ spinel nanoparticles were used as potassium persulfate activators during the oxidative degradation of the safranin T diazine dye. The degradation degree of safranin T for the duration of the “advanced” oxidation “ultrasound/ MnFe₂O₄ / K₂S₂O₈ ” of 7200 s and a catalyst content of 0.1 g/L was equal to 98.3%, and the rate constant was 1.529×10^–3 s^–1 .

采用声化学法（超声场共沉淀）合成了MnFe ₂ O ₄尖晶石纳米粒子。合成产物的布拉格衍射峰与MnFe ₂ O ₄尖晶石参考模型一致，并且使用Debye-Scherrer方程计算的平均MnFe ₂ O ₄微晶尺寸约为。 7纳米。所获得的MnFe ₂ O ₄尖晶石纳米粒子在番红T二嗪染料的氧化降解过程中用作过硫酸钾活化剂。 “高级”氧化“超声波/MnFe ₂ O ₄ /K ₂ S ₂ O ₈ ”持续时间7200 s、催化剂含量0.1 g/L时，番红T的降解程度为98.3%，速率常数为1.529×10 ^–3 s ^–1。