HPA/SiO_2光催化降解甲基橙的研究  

Photocatalytic Degradation of Methyl Orange on HPA/SiO_2

作　　者：伍远辉[1] 勾华[1] 

机构地区：[1]遵义师范学院化学系,贵州遵义563002

出　　处：《化学世界》2007年第5期269-271,共3页Chemical World

基　　金：贵州省教育厅自然科学基金重点资助项目(黔教科2005118)

摘　　要：用溶胶-凝胶法制备了负载型杂多酸催化剂HPA/SiO2。在光化学反应仪中,以紫外灯为光源,以HPA/SiO2为光催化剂,研究了其对模拟染料废水甲基橙溶液的光催化脱色降解的影响。讨论了影响催化降解效果的重要因素:不同正硅酸乙酯与磷钨酸的配比,溶液初始酸度,催化剂投加量等。在300 W的紫外灯光照下,讨论了HPA/SiO2光催化剂的重复使用性。最后,研究了该条件下10 mg/L的甲基橙溶液的动力学。HPA/SiO2 was prepared by sol-gel method and its activity for studied by using an ultraviolet lamp and a photochemical reaction tetraethoxysilane （TEOS） to phosphotungstic acid, initial pH value of investegated. The reusability of the catalyst was studied as well. Finally, orange on HPA/SiO2 by using 300 W ultraviolet lamp as light source was photocatalytic degradation of methyl orange was instrument. The influence of mass ratio of solution, catalyst quantity on degradation was the kinetics of degradation of 10 mg/L methyl measured.

关 键 词：HPA/SiO2 光催化 动力学 

分 类 号：O613.71[理学—无机化学] O647.33[理学—化学]