【摘要】 以Co（NO₃）₂·6H₂O和尿素为原料制备了9种Co₃O₄催化材料，考察了其对水中酮基布洛芬（KTP）的催化臭氧氧化降解效能。结果表明，与单独臭氧氧化相比，所制备的Co₃O₄对水中KTP的催化臭氧氧化降解率提高了12.0%～63.8%，且在n[Co（NO₃）₂·6H₂O]:n（尿素）=4:1、煅烧温度400℃下制备得到的Co₃O₄催化剂催化活性最高。SEM、XRD、FTIR、XPS、BET等表征分析显示，该Co₃O₄催化剂表面呈覆盖细小微粒的球状颗粒，晶相为立方相，且表面含有丰富的羟基，表面羟基密度为1.075×10^-5 mol/m²。机理研究证实，Co₃O₄对水中KTP的非均相催化臭氧氧化降解遵循羟基自由基（·OH）氧化机理，表面羟基作为催化剂活性位点促进了臭氧分解，提高了臭氧转移率和利用率，强化了新生活性物种·OH的生成，增强了对KTP的去除。KTP的氧化降解经历了芳环的羟基化、苯环裂解、双键加成及脂肪族链式化合物的氧化，最终被矿化为CO₂和H₂O。更多还原

【Abstract】 Nine kinds of Co₃O₄ catalytic materials were prepared using Co（NO₃）₂·6H₂O and urea as raw materials,and their catalytic ozonation performance for the degradation of ketoprofen（KTP） in water was investigated.The results showed that compared with ozone oxidation alone,the degradation rate of KTP in water by the prepared Co₃O₄ catalyzed ozonation increased by 12.0%-63.8%,and the Co₃O₄ catalyst prepared at n[Co（NO₃）₂·6H₂O]∶n（urea）=4∶1 and calcination temperature of 400℃had the highest catalytic activity.SEM,XRD,FTIR,XPS,BET and other characterization analysis results showed that the surface of the Co₃O₄ catalyst was spherical particles covered with fine particles,its crystalline phase was cubic Co₃O₄,and it contained abundant hydroxyl groups on its surface,with a surface hydroxyl density of 1.075×10^-5 mol/m².The mechanism investigation confirmed that the degradation of KTP in water by heterogeneous catalytic ozonation with Co₃O₄ followed the mechanism of hydroxyl radicals（·OH） oxidation.The use of surface hydroxyl groups as catalyst active points promoted ozone decomposition,improved ozone transfer and utilization efficiency,and strengthened the generation of new active species·OH,and enhanced the removal of KTP.The oxidative degradation of KTP underwent hydroxylation of aromatic rings,cleavage of benzene rings,double bond addition,and oxidation of aliphatic chain compounds,ultimately was mineralized into CO₂ and H₂O.更多还原