Evaluation of the electrical properties of titanium dioxide in its three mineral phases by simulation

Titanium dioxide (chemical formula TiO2) is a semiconductor that absorbs electromagnetic radiation in the UV region; according to the type of crystallization, different crystalline distributions will be formed (anatase, rutile and brookite) which have significant differences in their chemical, mechanical and electrical properties; the last mentioned property is currently a little-known field of research, however TiO2 is the most widely used photocatalyst and it is currently used to degrade various types of pollutants in the medium. In this paper, a methodology is designed and implemented to know the electrical behavior of anatase, rutile and brookite crystalline structures; the study is developed from the simulation in Comsol Multiphysic software; measurements of electrical properties are made with the technique of electrical impedance spectroscopy in a measurement frequency range of 4Hz to 8MHz. During the process, the particular geometric constants for this investigation are obtained, which are essential to obtain reliable results.