通过聚吡咯-聚苯胺共聚物修饰TiO_2纳米管阵列来增强其可见光光催化性能（英文）

纳米管阵列结构的光催化半导体设计一直以来是研究热点,因为纳米管结构有益于对光的吸收和减少载流子的迁移距离。然而,这些材料往往受限于比较差的电荷传输。因此,我们研究了一个易于重复利用的PPy-PANI/TiO2NT光催化剂,其中聚吡咯-聚苯胺共聚物充当光敏剂和电子导体介体。实验所制备的PPy-PANI/TiO2NT复合材料有更高的可见光吸收,更高的电荷分离效率以及在可见光下有156μA的光电流。所有的样品通过XRD,FTIR,SEM,光电流进行表征。通过降解4-NP也证明由聚吡咯-聚苯胺共聚物修饰后的二氧化钛有很好的光催化效果。

Enhancement of Visible-light Photocatalytic Performance Via TiO 2 Nanotube Arrays Loaded with Polypyrrole-polyaniline Copolymer

Since the nanotube structure are beneficial in enhancing the light adsorption and reducing the carrier migration distance,the design of photocatalytic semiconductors with nanotube arrays structure is always a hot topic.However,the performance is often limited by poor charge transport.Herein,we report an easy access to reuse photocatalyst of PPy-PANI/TiO2NT,in which PPy-PANI act as a light sensitizer and electrons conductor mediator.The as-prepared PPy-PANI/TiO2NT achieved the highest product of light absorption and charge separation efficiency and a photocurrent of 156μA under visible light.All the prepared samples were well characterized by XRD, FTIR,SEM,photocurrent.The modification of TiO2with PPy-PANI shows efficient catalytic activity evidenced by the decomposition towards 4NP.