【摘要】 以钛酸丁酯为原料,采用Sol-gel法,制备了纳米TiO2-ZnO膜,通过TG-DTA,透射电子显微镜(TEM),X-射线粉末衍射对TiO2膜进行了结构表征。对废水中S2-进行光催化氧化,采用亚甲基蓝分光光度法对废水中的S2-进行测定。研究表明:焙烧温度450°C,提拉次数为5,制备的复合材料膜具有较好的光催化活性和牢固性。在实验的浓度范围内,反应服从零级反应动力学规律,对废水中S2-的处理降解率达到88.90%,和纯纳米TiO2膜相比降解率提高了22%。更多还原

【Abstract】 Using Ti（OC₄H₉）₄ as raw material,nanometer TiO₂-ZnO film was prepared by sol-gel method,and characterized by TG-DTA,TEM and X-ray diffraction.The content of S^2- in waste water was determined adopting spectrophotometric method with methylene blue as calorant TiO₂ film calcined at 450（°C） and pulling five times was very solid and displayed good photo-catalytic actirity.The reaction was Zero-ordered,and the catalyst prepared from nanometer TiO₂ doped with Zn had the best enhancement effect.The rate of degradation of S^2- in waster water was 88.9% and was increased 22% comparing with pure nanometer TiO₂ film.更多还原