SO_4^(2-)/TiO_2-WO_3光催化氧化邻硝基苯酚(英文)  

Photocatalytic Oxidation of Orth-nitrophenol by SO_4^(2-)/TiO_2-WO_3

作　　者：彭少洪[1] 钟理[1] 

机构地区：[1]华南理工大学化工与能源学院,广东广州510640

出　　处：《分子催化》2007年第3期245-248,共4页Journal of Molecular Catalysis(China)

摘　　要：采用不同浓度的硫酸溶液浸渍处理TiO2-WO3,制得不同SO42-/TiO2-WO3光催化剂.考察了光催化剂对邻硝基苯酚溶液的光催化行为.发现SO42-/TiO2-WO3的光催化活性高于TiO2-WO3的光催化活性,浸渍液中H2SO4的浓度对SO42-/TiO2的催化活性有一定的影响,H2SO4溶液的最佳浓度为0.2 mol/L,最佳焙烧温度为550℃.最佳WO3的掺杂量w(WO3)为3%.催化降解过程符合一级动力学规律.The photocatalysts of SO4^2-/TiO2-WO3 With different loading of SO4^2- anion from different concentration of H2 SO4 were prepared. The photocatalytic effect of the photocatalysts on orth- nitropbenol was investigated. It was found that the photocatalytic activity of SO4^2-/TiO2-WO3 was higher than that of TiO2-WO3. The catalytic activity of SO4^2-/TiO2-WO3 depends on the sulfuric acid concentration and the best sulfuric acid concentration, calcination temperture and doping of tungsten oxide were 0.2 mol. L-1 , 550℃ and w（WO3） =3%, respectively. The experimental results showed that the degradation rate of orth-nitropbenol approximately follows the first order kinetics.

关 键 词：SO4^2-/TIO2-WO3 超强酸 光催化氧化 邻硝基苯酚 

分 类 号：O643.32[理学—物理化学]