Abstract

Comparision of optical and photocatalytic properties of TiO2 thin films modified with Ag nanoparticles

Author(s): H.R.Ravi, P.N.Prashanth kumar, H.R.Sreepad

This paper describes the development of nano structuredAg-TiO2 thin films by exposure ofAg+ ions on anatase phased TiO2 films by microwave glycol irradiation. It was characterized by XRD, SEM, EDX and XPS confirmed that films were anatase phase having uniform morphology and their optical characterization showed a shift in optical absorption towards shorter wavelength, which was correlated with the structural variation of the silver ions deposited on TiO2 thin film. In order to test them the photocatalytic degradation of MB as a standard analysis. The absorbance intensity of the organic pollutants decreases which was related to associate effects: the electron transfer from TiO2 to Ag and reducing the electron–hole recombination. Hence this paper we compared that Optical and photocatalytic properties of EBE and SGD films from the UV-Visible absorbance spectrophotometer. The result shows that without surfactant SGD Ag-TiO2 and EBE Ag-TiO2 films exhibited much better photoactivity than the surfactant SGD Ag-TiO2 films due to excess of silver composition on surfactant SGD-TiO2 films this has been explained in terms of the EDX Analysis.