制备条件对PANI/PATP/Au和TiO_2-PANI/PATP/Au膜光电化学性能的影响

应用电化学方法在不同条件下制备聚苯胺 (PANI)膜和TiO2 -PANI复合膜 ,并对其光电化学性能进行研究 .实验表明 ,制备条件是影响膜光电化学性能的重要因素 .对氨基硫酚 (PATP)的组装有利于改善PANI膜的附着力 ;部分氧化态PANI膜的光电化学响应明显优于还原态和氧化态PANI膜的光电化学响应 ;部分氧化态PANI膜的厚度对其光电化学性能有一最佳值 ;热处理虽然有利于改善TiO2 的光电化学性能 ,但温度太高 ,将破坏PANI膜的表面结构 ,对于TiO2 -PANI复合膜有一最佳的热处理温度 .优化制备条件大可改善TiO2 -PANI复合膜和PANI膜的光电化学性能

The Effect of Preparation Condition on the Photoelectrochemical Performance of both the PANI Film and TiO2-PANI Composite Film on Au

Both the PANI(polyaniline) film and TiO2-PANI composite film on the PATP(p-aminothiophenol)/Au substrate were obtained under different preparation condition by electrochemical methods, and their photoelectrochemical performances were also studied.The results showed that the photoelectrochemical performances of the films depend deeply on the comditions of preparation.The self-assembling of PATP favors the adhesion of PANI.The partially-oxidized PANI has a greater photoelectrochemical response than that of the reduced PANI and oxidized PANI.There is an optimum of film thickness for the photoelectrochemical performance of PANI film.Heat treating is in favor of the photoelectrochemical performance of TiO2,but decreases the photocurrent response of PANI film.There is an optimal temperature for the photoelectrochemical performance of TiO2-PANI composite film.Optimizing the preparation condition can improve the photoelectrochemical performances of both the PANI film and TiO2-PANI composite film.