微球TiO2/沸石催化剂的制备及其对氧氟沙星的降解  

Preparation of TiO2 microspheres/zeolite and its degradation on ofloxacin

作　　者：俞岚[1] 王娟 王长智[3] 陈玉红[1] 郑钊[1] 费正新[1] 罗小会[1] 温正如[1] 裘建平[1] Yu Lan;Wang Juan;Wang Zhangzhi;Chen Yuhong;Zheng Zhao;Fei Zhengxin;Luo Xiaohui;Wen Zhengru;Qiu Jianping(Jinhua Polytechnic,Jinhua 321007,China;Jinhua Huanke Environmental Technology Co.,Ltd.,Jinhua 321000,China;Environmental Science Research and Design Institute of Zhejiang Province,Hangzhou 310007,China)

机构地区：[1]金华职业技术学院,浙江金华321007 [2]金华市环科环境技术有限公司,浙江金华321000 [3]浙江省环境保护科学设计研究院,浙江杭州310007

出　　处：《工业水处理》2021年第1期88-92,共5页Industrial Water Treatment

基　　金：水体污染控制与治理科技重大专项(2018ZX07208-009-06);金华市科技局项目(2016-3-001,2017-4-001,2018-3-002,2019-4-168)。

摘　　要：利用光催化技术降解氧氟沙星,是处理喹诺酮类抗生素废水的有效途径。通过固相扩散法将TiO2微球(MS-TiO2)负载于沸石上制备MS-TiO2/沸石复合催化剂,采用XRD、SEM、UV-Vis对其进行表征。以模拟太阳光催化降解水中氧氟沙星考察其催化活性。结果表明,当TiO2负载量为35%,煅烧温度为450℃,催化剂投加量为1.5 g/L,废水初始pH为6.5时,光催化氧氟沙星的降解率达到最佳,为95.1%。氧氟沙星光催化降解过程符合一级动力学方程。Photocatalytic degradation of ofloxacin is an effective way to relieve quinolone antibiotic wastewater.MS-TiO2/zeolite composite catalyst was prepared by loading TiO2 microspheres(MS-TiO2)on zeolite by solid phase diffu-sion method.The samples were characterized by XRD,SEM,UV-Vis.The catalytic activity for ofloxacin degradation was investigated under simulated solar irradiation.The results showed that the degradation rate of ofloxacin reached an optimal 95.1% at conditions of TiO2 loading 35%,the calcination temperature 450℃,the catalyst dosage 1.5 g/L,and the initial pH 6.5.And the photocatalytic degradation reaction of ofloxacin can be described by the first-order kinetic equation.

关 键 词：TiO2微球/沸石 光催化 模拟太阳光 氧氟沙星 

分 类 号：X703.1[环境科学与工程—环境工程]