Author: R. Renugadevi, T.Venkatachalam, R. Narayanasamy, S.Prabahar, P.Krishnamurthi

DOI:

The structural, morphological, optical and photocatalytic properties of the cobalt doped TiO₂  films were studied using different techniques. Device quality coated TiO₂ thin films were prepared using by simple sol-gel technique by the various amount of dopants (0 to 15% of Co). The coated films have been characterized by different techniques such as XRD and EDAX and optical absorption studies for further investigation which is essential to make full use of their active properties.  TiO₂ thin films of different thickness were prepared by using the sol-gel technique.XRD shows that the as deposited films are exhibit anatase crystalline structure. The optical transmittance of the film prepared in this work studied n the range of 190 to 2500 nm with direct band transition and band gap energy value equals to 3.4ev. The photocatalytic of the film were studied by   TiO₂ and   Co doped TiO₂.  The films were dipped in tannery effluent with different time interval. The carbonate, chloride and sulphate present in different concentrations the remaining effluent were analyzed by conventional methods. It is found that increases the catalytic activitywhile increases dopant concentration.

Keywords: Cobalt, Titanium oxide, Sol-gel method, Structural Properties, Optical Properties, Photocatalytic activity, carbonate, chloride and sulphate.