TiO_2纳米管光电催化降解酸性橙染料  

Photoelectrocatalytic Degradation of Acid Orange on TiO_2 Nanotubes

作　　者：王晨[1] 衣守志[2] 王雯彦[2] 王立普[2] 艾青[2] 康雪[2] 

机构地区：[1]天津科技大学海洋科学与工程学院,天津300457 [2]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《化工环保》2012年第4期381-385,共5页Environmental Protection of Chemical Industry

摘　　要：采用电化学阳极氧化法在金属钛表面制备锐钛矿型TiO2纳米管,并以TiO2纳米管薄膜为阳极,考察溶液pH、外加偏压以及NaCl浓度对酸性橙的光电催化降解反应的影响。实验结果表明:在溶液pH为3.0、外加偏压为2.5 V、NaCl浓度为0.05 mol/L的最佳实验条件下反应30 min,酸性橙降解率可达99.99%;TiO2纳米管重复使用25次,酸性橙降解率仍可达94.57%。The anatase type TiO2 nanotubes were prepared on Ti surface by electrchemical anodic oxidation method. Using the TiO2 nanotube membrane as anode, the factors affecting photoelectrocatalytic degradation of acid orange were studied. The experimental results show that： Under the optimum conditions of solution pH 3.0, external bias potential 2.5 V, NaCl concentration 0.05 mol/L and reaction time 30 min, the acid orange degradation rate can reach 99.99%; After the TiO2 nanotubes is reused for 25 times, the acid orange degradation acid orange degradation rate can still reach 94.57%.

关 键 词：二氧化钛纳米管 光电催化 降解 酸性橙 废水处理 

分 类 号：TQ116.2[化学工程—无机化工]