Bi_2O_3-Ni_2O_3粉末气相光催化降解苯  

Gas-phase Photocatalytic Degradation of Benzene Using Bi_2O_3-Ni_2O_3 Powders

作　　者：丁鹏[1] 赵会微 唐艳茹[1] 张敏[1] 

机构地区：[1]长春师范大学化学学院,吉林长春130032 [2]国家半干旱农业工程技术研究中心,河北石家庄050051

出　　处：《长春师范大学学报》2015年第2期66-69,共4页Journal of Changchun Normal University

基　　金：吉林省教育厅重点项目(吉教科合字[2013]第249号);长春师范大学自然科学基金项目(长师院自科合字政策[2010]第006号)

摘　　要：本文制备了Bi2O3-Ni2O3纳米粉末,对其结构进行了表征,并研究了制备的纳米粉末对苯光催化降解的影响因素。结果表明:制备的纳米粉末由Bi2O3和Ni2O3复合而成,经750℃焙烧的光催化剂对苯光催化降解活性最高;水蒸气的加入和氧气的增加,都能促进苯的降解率增大;由Langmuir-Hinshelwood动力学模型得出苯的光催化降解反应的吸附常数和反应速率常数分别为0.1398L·μmol-1和0.0024μmol·L-1·min-1。Bi2O3- Ni2O3 nanometer powders were prepared by organic method,and their structures were characterized. Using the prepared Bi2O3- Ni2O3 powders as photocatalyst,the factors affecting the photocatalytic oxidation of benzene were studied. The results show that： The preparation of nanometer powder is made up of Bi2O3 and Ni2O3; The photocatalyst calcined at 750℃ has the best catalytic effect on benzene degradation; The benzene degradation rate can increase with the addition of water vapor and oxygen dosage; According to Langmuir- Hinshelwood kinetic model,the adsorption constant and the reaction rate constant for photocatalytic degradation of benzene are 0. 1398L·μmol- 1and 0. 0024μmol·L^- 1·min^- 1respectively.

关 键 词：Bi2O3-Ni2O3 苯 光催化 动力学 

分 类 号：X505[环境科学与工程—环境工程]