聚苯胺/TiO2复合纳米膜电极的制备及其光电性能

摘要

采用原位化学氧化法,在酸性TiO2溶胶中未加分散剂制备了聚苯胺修饰的TiO2稳定溶胶,并以涂刮法在柔性导电塑料薄膜上成膜。利用FT-IR、XRD、TEM、选区电子衍射、紫外-可见光谱、光电流-电压曲线对所制备的复合溶胶及复合膜进行了表征。结果表明TiO2与聚苯胺之间实现了结构上的复合,聚苯胺的引入改善了TiO2膜对太阳光的利用率,提高了TiO2膜的光电响应性能。这种用复合溶胶制备聚苯胺/TiO2复合膜的方式扩大了成膜基底的范围。%Polyaniline/titanium dioxide （PANI/TiO2） composite film electrodes were deposited on flexible conductive plastic substrates using the ＂doctor blading＂ method by PANI/TiO2 composite sol which was prepared by in situ chemical oxidation polymerization of aniline in the presence of acid TiO2 Sol. The PANI/TiO2 composite sol and the composite film were characterized by FT-IR, XRD, TEM, selected area electron diffraction （SAED）,UV-Vis spectroscopy and the photocurrent density vs applied electrode potential curves. The results showed that the composition between TiO2 and polyaniline in structure was achieved and the incorporation of polyaniline enhances the availability of the sun light. The photoelectric properties of PANI/TiO2 composite film electrodes were improved with the addition of polyaniline. The preparation of PANI/TiO2 film using composite sols expands the scope of substrates.