TiO2/沸石复合光催化剂的制备及其对盐酸四环素的光降解  

Photocatalytic Degradation of Tetracycline Hydrochloride in Water by TiO2/Zeolite

作　　者：谭万春[1,2] 谢晟盛 彭诗梦 曾余婷 聂小保 王云波[1,2] 万俊力 TAN Wan-chun;XIE Sheng-sheng;PENG Shi-meng;ZENG Yu-ting;NIE Xiao-bao;WANG Yun-bo;WAN Jun-li(School of Hydraulic Engineering,Changsha University of Science&Technology,Changsha,Hunan 410114,China;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province,Changsha,Hunan 410114,China)

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410114 [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410114

出　　处：《环境监测管理与技术》2019年第6期49-52,共4页The Administration and Technique of Environmental Monitoring

基　　金：国家自然科学基金资助项目(NO.51458068、NO.51309032);湖南省教育厅科学研究重点基金资助项目(NO.16A009)

摘　　要：用溶胶-凝胶法制备TiO 2/沸石复合光催化剂,采用X射线衍射仪、拉曼光谱等分析手段对其进行了表征,通过试验探究复合光催化剂降解水中盐酸四环素的影响因素及其规律,同时对催化剂稳定性作评价。结果表明,当复合光催化剂投加量为4 g/L,盐酸四环素初始质量浓度为20 mg/L,pH值为4.47,暗反应30 min,紫外光照120 min时,盐酸四环素去除率可达91.7%。催化剂的稳定性试验表明,复合光催化剂在重复使用4次以内时去除率可保持在80%左右。The composite catalyst of zeolite-supported TiO 2 prepared by sol-gel method was characterized by XRD,Raman Spectrum,etc.The influence factors and laws of tetracycline hydrochloride degradation in water were studied.The stability of the composite catalyst was evaluated.Test results showed that in the condition of 4.47 of pH,30 min of dark reaction and 120 min of UV irradiation,the removal rate of 20 mg/L tetracycline hydrochloride reached to 91.7%.Results of stability experiment showed that it kept 80%removal rate after the composite catalyst being reused for 4 times.

关 键 词：盐酸四环素 溶胶-凝胶法 TIO 2/沸石复合光催化剂 

分 类 号：O643.36[理学—物理化学] X505[理学—化学]