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中文摘要：
基于光电化学测试考察了光电解池中电解质（NaNO3，NaCl，Na2SO4，Na2S和NaOH）的种类和浓度对阳极氧化法制备的锐钛矿型TiO2膜电极光电性能的影响，并解释了其作用机理．结果表明，电解质捕获空穴的能力顺序为Na2s〉Na0H〉Na2sO4〉NaCI〉NaNO3．Na2S和NaOH在溶液中具有协同作用，当两者组成混合溶液并且浓度均为0．5mol／L时，更有利于TiO2膜光生电子-空穴对的分离和光电转化性能的提高．当0．5mol／LNaCl溶液中的403不锈钢（403SS）与0．5mol／LNa2S＋0．5mol／LNaOH混合溶液中的TiO2膜电极耦连时，光照膜电极可使403SS的电极电位负移约650mV，具有良好的光生阴极保护效应．当切断光源时，在该混合液中TiO2膜也能对403SS起到一定的阴极保护作用．
英文摘要：
The effect of the concentration and the variety of electrolytes （NaNO3, NaC1, Na2SOo, Na2S, NaOH） in a photoelectrolytic cell on photoelectrochemical properties of a TiO2 nanotube film prepared by an anodic oxidation method was studied by photoelectrochemical measurements. The results show that the trend of different electrolytes for capturing photogenerated holes is Na2 S 〉 NaOH 〉 Na2 SO4 〉 NaC1 〉 NaNO3. Due to the synergistic effect of Na2S and NaOH in a solution, when the concentrations of NaES and NaOH were both 0. 5 mol/L, the photogenerated electron-hole pairs could be more effectively separated. The potential of 403 stain less steel in a 0.5 moL/L NaC1 solution coupled with the TiO2 film electrode in a 0. 5 mol/L Na2S＋0. 5 mol/L NaOH solution decreased by 650 mV under white-light irradiation, indicating the film could provide a good photocathodic protection effect on the steel by the assistance of the electrolyte solution. After the light was cut off, the 403 stainless steel also could be protected to a certain extent by the TiO2 film.
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