聚苯胺/三氧化钨复合薄膜的制备与性质

Preparation and Properties of Polyaniline/Tungsten Trioxide Composite Film

摘要:

采用溶胶-凝胶法在氧化铟锡(ITO) 玻璃上制备三氧化钨（WO3）薄膜，将其在300℃下焙烧2h，再通过电沉积法在表面生长聚苯胺（PANI）薄膜。采用电化学方法、光谱分析法及扫描电镜等测试手段对WO3薄膜、PANI薄膜及PANI/WO3复合膜进行表征，发现复合膜着色态与褪色态透过率差异显著，变色效率（CE）达到57.94cm2/C ，比PANI和WO3薄膜的CE值28.94和10.55cm2/C分别提高了50%和82%。扫描电镜结果表明，PANI薄膜表面结构疏松，有无序的微孔；而复合膜的结构规整、微孔排列相对有序且表面形貌均匀。

Abstract:

Tungsten trioxide (WO3) films were prepared by sol-gel method on glass substrate of indium tin oxide (ITO), then annealed at 300℃ for 2h, and finally polyaniline (PANI) was grown on the surface of ITO glass coated WO3 film according to electrodeposition method. WO3 film, PANI film and PANI/WO3 composite membranes were characterized by electrochemical methods, spectroscopy and scanning electron microscopy (SEM) testing which show that the transmittance of colored and bleached state of composite membrane is significantly different, the color efficiency (CE) of composite membrane is up to 57.94cm2/C, while CE of PANI and WO3 film are 28.94cm2/C and 10.55cm2/C respectively，increasing by 50% and 82%. The result of scanning electron microscope reveals that the surface of PANI film is loose with disordered pores; the structure of composite membrane is smooth along with ordered pores and its surface is uniform.