Optical and Structural Characterization of Polyaniline/Titanium Dioxide Nano Composites

Abstract

Polyaniline/ titanium dioxide composite (PANI/TiO₂) was synthesized by in-situ chemical polymerization in an ice bath medium for polyaniline with different percentages of TiO₂ nanoparticles (3, 6, and 9) wt. %. UV-Vis spectrophotometer, Fourier Transforms Infrared (FTIR) spectrometer, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to characterize the materials. The XRD patterns showed polycrystalline structure for PURE PANI and PANI/TiO₂ composite of different TiO₂ ratios. The FT-IR investigated the presence of polyaniline. The analysis of UV-Vis spectra revealed that the energy gap for PANI/TiO₂ decreased with increasing the ratios of TiO₂ nanoparticles.