TiO2 Based Films Prepared by Sol-Gel Method for Advanced Water Treatment
In the present work, iron doped TiO2 films were prepared by sol-gel method. An extensive study by varying the dopant quantity (0, 0.7, 1.4, 5 % wt Fe2O3 related to TiO2), the type of substrate (glass or ITO coated glass) and annealing temperature (300 and 500°C) was performed. The sol-gel process evolution was studied by viscosity measurements and the unsupported gels were analyzed by thermal analysis (DTA/TGA) and IR spectroscopy. The deposited films were characterized by spectroellipsometry (SE). The catalytic activity of the films was determinate by measuring the degradation rate of the salicylic acid used as a model organic substance. A complex influence of the investigated parameters on the photocatalytic properties of the TiO2 based films was established.
Omer Van der Biest, Michael Gasik, Jozef Vleugels
A. Barau et al., "TiO2 Based Films Prepared by Sol-Gel Method for Advanced Water Treatment", Materials Science Forum, Vols. 492-493, pp. 311-316, 2005