TiO_2-Fe_3O_4复合催化剂对乳酸左氧氟沙星的光解研究  

Study on Lactic acid Levofloxacin Photoanalysis by TiO_2/Fe_3O_4 Composite Catalyst

作　　者：曹冬梅 左翔 袁丙青 张晓红[3] 张海黔[3] 

机构地区：[1]中国三峡新能源有限公司华东分公司,210098 [2]南京河海科技有限公司,水资源高效利用与工程安全国家工程研究中心,210098 [3]南京航空航天大学材料科学与技术学院,江苏南京211100

出　　处：《水处理技术》2018年第3期74-77,共4页Technology of Water Treatment

基　　金：国家自然科学基金(11575086;31400721);江苏省自然科学基金(BK20131355);江苏高校优势学科建设工程资助项目

摘　　要：针对抗生素的污染问题,采用磁性Fe_3O_4为核心制备新型纳米光催化复合材料,以乳酸左氧氟沙星为目标抗生素,与纯Ti O_2条件下光催化降解进行对比。结果表明,在p H为10~11、温度100℃、相同体积的0.5 mol/L的Fe SO_4与Fe Cl_3溶液制备的复合催化剂降解效果明显,质量浓度分别为10、100 mg/L的LVF溶液Ti O_2适宜用量分别为0.05、10 g/L。Fe_3O_4在反应过程中发挥了重要作用。该复合催化剂还具备多次回收利用、无污染等优势,可为医用及兽用抗生素的有效后处理提供参考。Aimed at antibiotic pollution problems,new type nano photocatalytic composite materials was prepared with magnetic Fe3O4as a core.Levofloxacin lactate as the target antibiotic was compared with photocatalytic degradation under pure Ti O2condition.The result showed that,the degradation effect by composite catalytic material prepared with p H of 10~11,temperature of 100℃and same volume with concentration of 0.5 mol/L Fe SO4and Fe Cl3solution was apparent,and when mass concentration of LVF was 10 and 100 mg/L,the suitable dosage of Ti O2was 0.05 and 10 g/L respectively.Fe3O4played a important role in the reaction process.The composite catalyst had many advantages such as recyclable and non-pollution,and it also provided a foundation for the effective post-processing of medical and veterinary antibiotics.

关 键 词：TiO2-Fe3O4 磁性 光催化 降解 乳酸左氧氟沙星 

分 类 号：X703.1[环境科学与工程—环境工程]