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Abstract: Fibriform polyaniline/nano-TiO2 composite is prepared by one-step in situ oxidation polymerization of aniline in the presence of nano-TiO2 particles, which contains 80% conducting polyaniline by mass, with a conductivity of 2.45S/cm at 25°C. Its maximum specific capacitance is 330F g−1 at a constant current density of 1.5A g−1, and can be subjected to charge/discharge over 10,000 cycles in the voltage range of 0.05–0.55V. [Copyright &y& Elsevier]

Abstract: A polyaniline/rutile-TiO2 nanocomposite, with a conductivity of 0.5 S cm−1 at 25 °C, was prepared by in-situ polymerization of aniline in the presence of rutile-TiO2 nanoparticles, and was characterized by Fourier-transform infrared spectra, wide-angle X-ray diffraction, transmission electron microscopy, conductivity and cyclic voltammetry, as well as thermogravimetric analysis. The introduction of conducting polyaniline (PANI), not only improved the conductivity of rutile-TiO2 nanoparticles, but also improved the dispersibility of rutile-TiO2 nanoparticles. It can potentially be used in commercial applications as fillers for antistatic and anticorrosion coatings. [Copyright &y& Elsevier]

A composite of polyaniline (PAn) encapsulating titania (TiO2) with nanometer size was prepared by the oxidating aniline hydrochloride with ammonium peroxodisulfate in the presence of TiO2 nanoparticles. The obtained composite was characterized by Fourier-transform infrared spectra (FTIR), Fourier-transform Raman spectra, thermogravimetric analysis (TGA), wide-angle X-ray diffraction (WXRD) and scanning electron microscope (SEM). The conductivity was also investigated. FTIR and FT-Raman spectra measurements show that PAn and TiO2 nanoparticles are not simply blended or mixed up, and a strong interaction exists at the interface of nano-TiO2 and PAn. It is probably a composite at molecular level. TGA results suggests that PAn/nano-TiO2 composite contains 10% PAn by mass. The conductivity of PAn/nano-TiO2 composite has reached 2.9×10−2 S cm−1 at 20 °C but the morphology and crystallinity of nano-TiO2 were unchanged. [Copyright &y& Elsevier]