【摘要】 开发高效、可持续利用的催化剂是过硫酸盐高级氧化技术发展的重点。将铁锰尖晶石MnFe2O4与ε-MnO2复合制备ε-MnO2/MnFe2O4复合催化剂，利用XRD、SEM、FTIR和XPS等方法对ε-MnO2/MnFe2O4的微观结构和形貌进行表征，并将其作为过一硫酸盐（PMS）催化剂来探究对四环素（TC,10 mg/L）的催化降解性能。结果表明：在催化剂投加0.1 g/L,PMS用量为0.05 g/L,25℃,pH不做调整时，90 min内对四环素的催化降解达到90.4%。实验经5次循环后TC的降解效率为76.3%,说明催化剂有较好的循环稳定性。自由基捕获实验表明降解涉及活性氧物种有：催化剂表面-OH,SO4·-,·OH, O2·-和1O2,其中催化剂表面-OH基团作起主导作用。研究制备的催化剂活化PMS对水中的抗生素有较好去除效能，具备应用潜力。更多还原

【Abstract】 Exploring efficient and sustainable catalysts is the focus of the development of persulfate advanced oxidation process.Epsilon-MnO2/MnFe2O4 complex was synthesized with Fe-Mn spinel MnFe2O4 and ε-MnO2,the microstructure and morphology were characterized by XRD,SEM,FTIR and XPS.The catalytic degradation performance of ε-MnO2/MnFe2O4 was investigated by activating peroxymonosulfate（PMS）as a catalyst to degrade tetracycline（TC）.The results showed that the catalytic degradation of TC could reach 90.4% in 90 min when 0.1 g/L catalyst was added, PMS dosage was 0.05 g/L,pH was not adjusted and temperature was 25 ℃.After 5 cycles of experiments, the degradation efficiency of ε-MnO2/MnFe2O4 activated PMS for TC was still 76.3%,which indicated that the catalyst had good cycle stability.The free radical capture experiments showed that a variety of reactive oxygen species co-contributed to the degradation of TC,such as-OH on the catalyst surface, SO4·-,·OH,O2·- and 1O2,in which the-OH group on the catalyst surface played a leading role.The prepared catalyst activated PMS had good removal efficiency for antibiotics in water, and therefore had potential for application.更多还原