环境工程学报2012，Vol.6Issue(1)：185-190,6.
纳米TiO_2/EP光催化降解罗丹明B废水的研究
Photocatalytic degradation of Rhodamine B by nanoTiO_2-expanded pearlite
摘要
Abstract
Floating environmental remediation materials,expanded perlite（EP） modified different loading times with TiO2 were prepared by Sol-Gel method.Photocatalytic degradation of Rhodamine B in polluted water by the materials（TiO2-EP）adsorption degradation kinetics,as well as the effects of recycling times,different loading times and the initial concentration of Rhodamine B on photocatalysis rate were studied.The recovered efficiency and catalytic activity of the regenerated photocatalyst were also tested.The results showed that photocatalyst modified three times with TiO2 is better than others.When the amount of photocatalyst is 0.2 g,after 6 h,removal rates of Rhodamine B in solutions with 10 mg/L and 15 mg/L Rhodamine B were 98% and 74%,respectively.The photocatalyst activity has little change after the five times recycling,and the degradation rate of Rhodamine B decreased less than 8%.The reaction of photocatalysis for Rhodamine B can be expressed as first-order kinetic mode within the concentration range of Rhodamine B between 10 mg/L and 30 mg/L.关键词
膨胀珍珠岩/TiO2/光催化降解/罗丹明BKey words
expanded perlite/titanium dioxide（TiO2）/photocatalytic degradation/Rhodamine B分类
资源环境引用本文复制引用
雍卫卫,王小治,高芡芡,尹微琴,郁梦洁,封克,郭荣..纳米TiO_2/EP光催化降解罗丹明B废水的研究[J].环境工程学报,2012,6(1):185-190,6.基金项目
污染控制与资源化研究国家重点实验室开放课题 （）
江苏省博士后基金项目 （）
江苏省环境材料与环境工程重点实验室项目 （）
扬州大学博士后基金项目 （）
