光−臭氧催化氧化型SiC泡沫陶瓷的制备及其在左氧氟沙星降解中的应用  

Preparation of photocatalytic ozonation SiC foam and its application in levofloxacin degradation

作　　者：邹敬桃 李旋坤 杨洁 魏铭飞 张文启[1] 李光辉 ZOU Jingtao;LI Xuankun;YANG Jie;WEI Mingfei;ZHANG Wenqi;LI Guanghui(School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《上海工程技术大学学报》2023年第2期113-119,共7页Journal of Shanghai University of Engineering Science

基　　金：山东省自然科学基金青年项目资助(ZR2021QE223)。

摘　　要：针对抗生素难以降解而造成环境污染问题,以左氧氟沙星(Levofloxacin,LEV)为目标污染物,制备Ce-TiO_(2)/SiC泡沫陶瓷复合材料,并由此构建光催化臭氧氧化耦合体系(Ce-TiO_(2)/SiC+LED+O_(3)).结果表明,该耦合体系能有效降解LEV,去除率为99%,化学需氧量(Chemical Oxygen Demand,COD)降解率高达85.9%.该耦合体系体现了较高的协同效应,其一级反应动力学速率常数大于臭氧氧化(O_(3))与光催化(Ce-TiO_(2)/SiC+LED)之和.另外,Ce-TiO_(2)/SiC泡沫陶瓷的稳定性实验表明,在5次重复使用实验后,光催化臭氧氧化活性基本不变.To solve the problem of environmental pollution caused by the difficult degradation of antibiotics,Ce-TiO_(2)/SiC foam was prepared,levofloxacin(Levofloxacin,LEV)was chosen as the target pollutant,and a photocatalytic ozonation coupling system(Ce-TiO_(2)/SiC+LED+O_(3))was studied.The results show that the coupling system can effectively degrade LEV,the LEV removal was 99%and the chemical oxygen demand(COD)removal was as high as 85.9%.The coupling system showed a good synergistic effect,and its first-order reaction kinetic rate constant was greater than the sum of ozonation(O_(3))and photocatalysis(Ce-TiO_(2)/SiC+LED).In addition,the stability experiment of Ce-TiO_(2)/SiC foam showed that the photocatalytic ozonation activity is basically unchanged after five reuses.

关 键 词：光催化臭氧氧化 COD降解 左氧氟沙星 

分 类 号：O643.36[理学—物理化学]