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中文摘要：
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.
英文摘要：
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.
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