贝壳类基纳米Fe^3＋-TiO2光催化降解海洋油污的动力学研究  

Study on the Kinetic of Fe^(3+)-TiO_2/Shell Photocatalytic Degradation of Oil

作　　者：李秀芹[1] 李子真[1] 李春虎[1] 王亮[1] 邢宁宁[1] 冯丽娟[1] 

机构地区：[1]中国海洋大学化学化工学院,教育部海洋化学理论与技术重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2013年第4期63-66,共4页Periodical of Ocean University of China

基　　金：青岛市科技发展资金项目(2011-5-029-QT)资助

摘　　要：以钛酸四丁酯为钛源制备溶胶-凝胶,采用浸渍煅烧法制备了贝壳类基纳米Fe3+-TiO2光催化剂。以碘钨灯为光源,研究了海水中油污的降解动力学。结果表明:油污的光催化降解分为2个阶段:第一阶段表观降解速率较快;第二阶段油污降解符合Langmuir-Hinshelwood动力学模型,反应速率常数k为3.52mg/(L.h),吸附平衡常数K为0.023 9L/mg,反应活化能Ea为23.551kJ/mol。Sol-gel was prepared with the Tetrabutyl titanate which was used as catalytic active precursor.The Fe3＋-doped TiO2/shell-base photocatalyst was loaded on the regular structured seashells by wet-impregnation-calcination method.The kinetic of degradation of oil on the surface of ocean over the Fe3＋-doped TiO2/shell-base photocatalyst was studied using iodine-tungsten lamp as illuminating source.Oil photocatalytic degradation was divided into two stages.The first stage of the apparent degradation rate was faster.The second stage with oil degradation fit Langmuir-Hinshelwood dynamic model.Reaction rate constant k was 3.52 mg/（L·h）,adsorption equilibrium constant K was 0.023 9 L/mg and reaction activation energy Ea was 23.551 kJ/mol.

关 键 词：贝壳类基纳米Fe3+-TiO2 光催化氧化 油污 动力学 

分 类 号：TE991.5[石油与天然气工程—石油机械设备]