Titania (TiO 2) nanoparticles were prepared by combining bulk titania with trisodium citrate solution at room temperature without calcination. The formation of titania nanoparticles was confirmed from XRD and by the dominant FTIR peaks at 621 cm-1 , 412 cm-1. UV-Visible analysis shows the occurrence of strong red shift, confirming the presence of nanoparticles which is essential for higher photo catalytic activities. TGA analysis reveals that the synthesized titania nanoparticles were thermally stable up to 700 °C. SEM image shows that the particles of the synthesized sample are in nanometer range which is in accordance with UV-Visible studies.

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Poly(aniline) nanocomposites were obtained by polymerisation under various experimental conditions including variation of time, temperature, monomer and concentration of initiators. The ratios of imino and amino units were estimated and correlated the with polyaniline (PANI) structure. Rates of polymerisation (Rp) values were estimated by a gravimetric method. TGA counsels the thermal stability of PANI. Through FTIR study, the structure of PANI/As2O3 nanocomposites was recognised. Comparison of polyanilines produced with two different initiators was done.

It is a novel approach to the synthesize Poly(aniline) / V2O5 nano composite by free radical polymerization method under different experimental conditions such as variation in time, temperature and concentration of aniline and initiator. It was indicated that V2O5 itself could catalyze the oxidative polymerization of aniline. This can be attributed to the internal doping effect, which introduced flexibility to the rigid PANI backbone. TGA counseled the thermal stability of PANI. Through FTIR study, the structure of PANI was established. Comparison of polymerized aniline composite with two different initiators was done.