在TiO_2催化剂上菲的光催化氧化反应研究  

Photocatalytic Oxidation of Phenanthrene on TiO_2 Powder

作　　者：潘海祥[1] 傅家谟[1] 盛国英[1] 肖贤明[1] 闵育顺 

机构地区：[1]中国科学院

出　　处：《环境科学研究》2000年第6期37-39,共3页Research of Environmental Sciences

基　　金：国家自然科学基金资助项目!(496 0 2 0 31和 49872 0 92 )

摘　　要：选择TiO2 粉末催化剂 ,在发射光谱为 2 5 4nm的 15W紫外灯照射下 ,反应液中Al3 +,Fe3 +和H2 O2 浓度增加能提高菲的降解率 ;TiO2 表面载银量的增加能提高降解速度 ;TiO2 投入量在一定范围内随投入量的增加 ,光催化降解菲的速度也增加 ,但当投入量较多时又能降低降解速率 ;在酸性条件下 ,菲易被光催化降解 ;The photocatalytic oxidation of phenanthrene in TiO 2 powder suspensions by some factors has been studied in the flask illuminated with a 15 W UV lamp.These factors are Al 3+ ,Fe 3+ ,H 2O 2,pH,initial concentration,dosage of TiO 2 and loading silver.The results show that Al 3+ ,Fe 3+ ,H 2O 2 and loading silver can accelerate the degradation of phenanthrene.With the increase of TiO 2,the degradation rate increases,but it can prevent phenanthrene from degrading at a high dosage.In the acid condition,phenanthrene is easily degraded.There is negative first order reaction kinetic relationship between initial concentration and reaction rate.

关 键 词：光催化降解 菲 二氧化钛粉末 催化剂 废水处理 

分 类 号：X703.5[环境科学与工程—环境工程]