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N,S和Cl改性纳米TiO₂薄膜的光电性能

Photoelectrochemical Properties of N,S,and Cl Modified Nano TiO₂ Thin Films

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【Author】 YUN Hong1,2,LIN Chang-jian2,LI Jing2,DU Rong-gui2(1.Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry,Department of Energy Source and Environment Engineering,Shanghai University of Electric Power,Shanghai 200090,China;2.State Key Laboratory for Physical Chemistry of Solid Surface,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China)

【机构】上海电力学院上海高校电力腐蚀控制与应用电化学重点实验室能源与环境工程学院；厦门大学固体表面物理化学国家重点实验室化学化工学院化学系；

【摘要】采用溶胶-凝胶技术,以钛酸四正丁酯为原料,分别添加浓硝酸、浓硫酸或浓盐酸,制备氮、硫或氯改性纳米TiO2薄膜.紫外-可见漫反射光谱、光电流谱、交流阻抗谱和电位～时间变化测试表明,氮改性纳米TiO2薄膜使表面结构优化,从而可提高纳米TiO2电极的光电转换效率.更多还原

【Abstract】 The nitrogen(N),sulfur(S) and chlorine(Cl) modified nano TiO2 thin films were prepared by adding Ti(O-n-Bu)4 as the precursor into concentrated HNO3,H2SO4 and HCl Solutions,respectively,on different substrates in a sol-gel process.The photoelectrochemical performances of N,S and Cl modified nano TiO2 thin films have been studied by UV-vis(DRS),photocurrent curves,EIS and OCP-time curves.N-modified TiO2 nano films show better surface structure,which helps to improve the quantum efficiency of nano TiO2 thin films.更多还原