Importance of carbon (prepared from Azadirachta indica) for photo catalytic applications

Nanocrystalline TiO2 is a highly suitable material for photo catalytic applications. TiO2 nanocrystals have been synthesized by simple sol–gel method at different pH values. By using liquid impregnation method carbon doped TiO2 nanocrystal has been prepared. Carbon doped TiO2 nanocrystalline thin films have been prepared by doctor blade method. The photo catalytic activity of the prepared carbon doped TiO2 nanocrystalline thin films are investigated based on oxidation and decomposition of methylene blue in aqueous solution. The photo catalytic study has been carried out using UV visible spectrometer. It has been confirmed that the pH of the sol plays a vital role in photo catalytic application. TiO2 nanocrystals synthesized using pH = 10.6 shows considerable degradation of methylene blue than the nanocrystals synthesized using other pH values.