蜂窝陶瓷负载TiO_2光催化降解邻氯苯酚水溶液  

Photocatalytic Degradation of o-chlorophenol in Aqueous Solution by TiO_2 Supported Honeycomb Ceramics

作　　者：谭砂砾[1] 张玉军[2] 郑华德[2] 张燕[3] 

机构地区：[1]山东大学环境科学与工程学院,济南250100 [2]山东大学材料科学与工程学院,济南250061 [3]贵州工业大学环境工程学院,贵阳550000

出　　处：《环境科学与技术》2004年第6期95-96,103,共3页Environmental Science & Technology

摘　　要：采用溶胶 -凝胶技术 (Sol-Gel)制备以蜂窝陶瓷为载体的负载型TiO2 光催化剂。探讨工艺条件对催化降解效果的影响 ;结果表明 ,蜂窝陶瓷表面浸涂 5层TiO2 薄膜 ,经 50 0℃焙烧后 ,具有较高的光催化活性。在紫外光照射下 ,该催化剂降解 1 .0× 1 0 - 3mol/L邻氯苯酚水溶液 2 .5h ,降解率达到 1 0 0 % ;在O3的协同效应下 ,降解率在 1 .5h即可达到 1 0 0 %A new TiO_2 photo-catalyst was prepared by Sol-Gel technique using honeycomb ceramics as supporter. The effect of preparing process on catalytic activity of TiO_2 photo-catalyst was studied. Results show that the catalyst fired at 500℃, with 5 layers of TiO_2 film on honeycomb ceramics appears high catalytic activity. Under UV radiation, 100% of o-chlorophenol in the solution of 1.0×10^(-3)mol/L was photo-catalytically degraded by this catalyst in 2.5 h, and with the cooperation of O_3, o-chlorophenol was full degrades in 1.5h.

关 键 词：蜂窝陶瓷 TIO2 光催化 邻氯苯酚 

分 类 号：X703[环境科学与工程—环境工程]