CoFe₂O₄-CeO₂ composites with different CoFe₂O₄ content were synthesized and used as catalysts for peroxymonosulfate (PMS) activation in water purification. Under the conditions of 200 mg/L 15%CoFe₂O₄-CeO₂ and 0.15 mM PMS, complete atrazine degradation was achieved in the 15%CoFe₂O₄-CeO₂/PMS system. The pseudo-first-order rate constant (k_obs) in 15%CoFe₂O₄-CeO₂/PMS system (0.224 min⁻¹) was 2.4 and 4.8 times of that in CoFe₂O₄/PMS system (0.092 min⁻¹) and (CoFe₂O₄ + CeO₂)/PMS system (0.047 min⁻¹). The main reactive species were verified through various quenching experiments and electron paramagnetic resonance tests, and the concentration of two main radicals was calculated. In addition, the interaction between CoFe₂O₄ and CeO₂ involving Co(III)/Co(II), Fe(III)/Fe(II), and Ce(IV)/Ce(III) redox recycle for accelerating the degradation of organic compounds was explored. In addition, different from Cl⁻, HCO₃⁻ and NO₃⁻, H₂PO₄⁻ could promote atrazine degradation in 15%CoFe₂O₄-CeO₂/PMS system by improving sulfate radical concentration in the reaction system. The main degradation intermediates of atrazine in the 15%CoFe₂O₄-CeO₂/PMS and CoFe₂O₄/PMS systems were compared, as well as the degradation pathways. The toxicity analysis based on luminescent bacteria Vibrio fischeri indicated the superiority of 15%CoFe₂O₄-CeO₂/PMS than CoFe₂O₄/PMS systems for ATZ degradation.

合成了不同CoFe ₂ O ₄含量的CoFe ₂ O ₄ -CeO ₂复合材料，并将其用作水净化中过氧单硫酸盐（PMS）活化的催化剂。在200 mg/L 15%CoFe ₂ O ₄ -CeO _{2和0.15 mM PMS条件下，15%CoFe 2} O ₄ -CeO ₂ /PMS体系实现了阿特拉津的完全降解。15%CoFe ₂ O ₄ -CeO ₂ /PMS系统中的伪一级速率常数（k _obs ） （0.224 min ^-1)是CoFe ₂ O ₄ /PMS系统(0.092 min ^-1 )和(CoFe ₂ O ₄  + CeO ₂ )/PMS系统(0.047 min ^-1 )的2.4和4.8倍。通过各种猝灭实验和电子顺磁共振测试验证了主要活性物种，并计算了两个主要自由基的浓度。此外，CoFe ₂ O ₄和 CeO ₂之间的相互作用涉及 Co(III)/Co(II)、Fe(III)/Fe(II) 和 Ce(IV)/Ce(III) 氧化还原循环以加速降解有机化合物进行了探索。另外，与Cl ^-不同，HCO ₃ ^-和NO ₃ ^-、H ₂ PO ₄ ^-可以通过提高反应体系中硫酸根浓度来促进15%CoFe ₂ O ₄ -CeO _{2 /PMS体系中阿特拉津的降解。比较了15%CoFe 2} O ₄ -CeO ₂ /PMS和CoFe ₂ O ₄ /PMS体系中阿特拉津的主要降解中间体以及降解途径。基于发光细菌费氏弧菌的毒性分析表明15%CoFe ₂ O ₄ -CeO ₂ /PMS优于CoFe用于 ATZ 降解的₂ O _{4 /PMS 系统。}