Influence of polyaniline on photoelectrochemical characterization of TiO₂-PANI layers

Abstract

TiO2-polyaniline (PANI) composites were prepared by thermal oxidation of titanium substrate combined with chemical polymerization of aniline. Their chemical structures were determined by infrared (IR) spectroscopy and x-ray analysis. Their morphological structures were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Their electro- and photoelectrochmical properties were examined by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analysis. The results showed that their photoelectrochemical behavior was better than that of TiO2 electrode; among them the more PANI existed in composite the higher was the anodic photoelectrochemical current. It was also found that the composite has structure in the range of nanosize.

Effect of nanostructured graphene oxide on electrochemical activity of its composite with polyaniline titanium dioxide

“…Aniline (Anil) was fresh distilled under vacuum before use. The titanium electrodes as electrode substrate were polished by sandpaper with 180 grits and then pretreated following the procedure in [6] before use. The PANi-TiO 2 -GO nanocomposites were prepared by chemical method using TiO 2 in sol gel form (from the Institute of Applied Physics, VAST, Vietnam), GO in powder form (from the Institute of Chemistry, VAST, Vietnam) and ammoniumpersulfate (molar ratio to Anil was equal 1) as an oxidation agent under stirring at a temperature of about 0 °C-5 °C.…”