新颖聚苯胺/氧化钛复合结构的设计组装

Herein we obtain a novel incorporating style of polyanilne(PANI)/TiO2 composites via a designed two-step route. One-dimensional (1D) PANI is introduced in the step of TiO2 crystal growth instead of after crystallization. During the hydrothermal process, 1D PANI can act as an effective template to stabilize TiO2 particles at nanoscale through interfacial chemical bonds. In this way, the transition of some newly formed anatase crystals to rutile phase is partly suppressed. Also, the as-prepared composites show obvious light response in a wide range of 230~900 nm due to the sensitizing effect of PANI. The as-obtained composites exhibit the improved visible photocatalytic property with scarce decrease of UV photoactivity.