Ru-TiO_2光电极的研制与性能研究  

Preparation and Characterization of Ru-TiO_2 Photoelectrode

作　　者：王理明[1,2] 姚秉华[1] 裴亮[1] 

机构地区：[1]西安理工大学水利水电学院理学院,陕西西安710048 [2]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《分析科学学报》2010年第6期645-648,共4页Journal of Analytical Science

基　　金：教育部博士学科点专项基金(No.20096118110008);陕西省教育厅专项基金(No.09JK672);西安市科技创新支撑计划(No.CXY09025(1));西安理工大学优秀博士学位论文研究基金(602-210804)

摘　　要：采用阳极氧化法制备Ru-TiO2光电极,通过紫外-可见漫反射吸收(UV-Vis-DRS)、X-射线衍射(XRD)和交流阻抗(EIS)对光电极的性能进行表征,探讨了氧化电压、煅烧温度、钌掺杂量的影响。结果表明:Ru掺杂后TiO2结晶更完全,光吸收强度明显提高。在HF电解液中,阳极氧化制备Ru-TiO2光电极的最佳条件为:氧化电压为20V,热处理温度600℃,钌掺杂量1%。不同条件Ru-TiO2光电极对甲基橙溶液进行脱色效果依次为:光电催化>光催化>电催化。Ru-TiO2photoelectrodes were prepared by anodization and characterized by UV-Vis diffuse reflectance spectrum （UV-Vis-DRS）,X-ray diffraction （XRD）and electrochemical impedance spectroseopy（EIS）.The effects of anodizing voltage,heat treatment and addition of ruthenium were discussed.The results showed that TiO2was completely crystallized by Ru-doping,and the absorption intensity was accordingly increased.In HF electrolyte,Ru-TiO2photoelectrodes were obtained under the optimal preparing conditions of anodizing voltage of 20V,heat treatment at 600℃,and addition of 1%ruthenium.The ability to decolorize methyl orange solution under different conditions was as follows：photoelectrocatalysis〉photocatalysis〉electrocatalysis.

关 键 词：Ru-TiO2光电极 阳极氧化 光电催化 

分 类 号：O657.32[理学—分析化学]