【摘要】 采用溶胶凝胶法制备了Co₃O₄和Co₃O₄@SiO₂、Co₃O₄@ZrO₂、Co₃O₄@Al₂O₃、Co₃O₄@TiO₂这4种复合气凝胶催化剂，并研究了它们活化过一硫酸盐（PMS）降解氧氟沙星（OFL）的性能。通过性能测试和各种表征对4种复合催化剂进行对比，筛选出了最优催化剂Co₃O₄@SiO₂,并对其反应机制和反应影响因素进行了系统性的研究。结果表明：Co₃O₄@SiO₂/PMS体系在10 min内对10 mg/L OFL的降解效率能达到99.14%,且在pH 3～11内能够高效降解OFL,降解反应符合一级拟动力学。通过顺磁电振波谱和淬灭实验确定SO₄^-·和¹O₂是反应中的主要活性物种。TOC及循环实验证明了Co₃O₄@SiO₂的高性能和可循环性，为降解抗生素废水领域提供了高效的催化剂。更多还原

【Abstract】 Four composite aerogel catalysts, Co₃O₄@SiO₂, Co₃O₄@ZrO₂, Co₃O₄@Al₂O₃ and Co₃O₄@TiO₂, were prepared using the sol-gel method, and their performance in activating peroxymonosulphate（PMS） to degrade ofloxacin（OFL） was investigated. Through performance testing and various characterization methods, four composite catalysts were compared, and the optimal catalyst Co₃O₄@SiO₂ was selected. A systematic study was conducted on its reaction mechanism and influencing factors. The results showed that the Co₃O₄@SiO₂/PMS system achieved a degradation efficiency of 99.14% for 10 mg/L OFL within 10 min, and could efficiently degrade OFL within a pH range of 3-11. The degradation reaction followed first-order pseudo-kinetic behaviour. Paramagnetic electron spin resonance spectroscopy and quenching experiments confirmed that SO₄^-· and ¹O₂ were the primary active species in the reaction. TOC and cycling experiments demonstrated the high performance and recyclability of Co₃O₄@SiO₂, providing an efficient catalyst for the degradation of antibiotic wastewater.更多还原