电解液对TiO_2纳米管阵列薄膜光电催化性能的影响  

The Influence of Electrolytes on the Photoelectrocatalytic Performance of TiO_2 Nanotube Array Film

作　　者：魏波波[1] 卢建树[1] 

机构地区：[1]浙江工业大学材料化学实验室,浙江杭州310014

出　　处：《浙江化工》2012年第12期29-32,共4页Zhejiang Chemical Industry

摘　　要：采用电化学阳极氧化法,在HF-H2O,NH4F-H2O,NH4F-H2O-乙二醇三种不同的电解液体系中,于Ti基底上制备了TiO2纳米管阵列薄膜,并在空气气氛中于500℃进行结晶热处理。以亚甲基蓝为模拟污染物,考察了TiO2纳米管阵列薄膜的光电催化降解效果,并比较了电解催化、光催化和光电催化对亚甲基蓝溶液降解效率的差异。结果表明在NH4F-H2O-乙二醇电解液体系中制备的TiO2纳米管阵列光电催化性能最好。经过340 min后,催化效率达到了94.23%。TiO2 nanotube array films were prepared by electrochemical anodization on Ti surface in three electrolytes （HF-H2O, NH4F-H2O, NH4F-H2O-ethylene glycol）. The resulting anodized Ti samples were annealed at 500 ℃in air for 1 h. The photoelectroeatalytic degradation performance of the annealed samples was investigated using methylene blue （MB） as a target pollutant, and compared the differences of electrolysis catalytic, photoeatalytie and photoeleetrocatalytic degradation. The results showed that TiO2 nanotube array film prepared in the NH4F-H2O-glycol electrolyte performs the best photoeatalytic property. After 340 min, 94.23% MB was catalytically degraded.

关 键 词：TIO2纳米管阵列 阳极氧化 光电催化 亚甲基蓝 

分 类 号：TB383.2[一般工业技术—材料科学与工程] O614.411[理学—无机化学]