Titanium Dioxide Coatings on Stainless Steel Read full article
onlineFull Article Titanium dioxide (TiO2) is a photosensitive
semiconductor and its valence electrons are excited into the
conduction band by high-energy radiation in the ultraviolet (UV)
range (200–400 nm). TiO2 has been used for diverse applications
in various configurations as pellets, beads, powders, and
immobilized films. The most frequently cited applications for
TiO2 in a film configuration are as self-cleaning materials,
agents for heterogeneous photocatalysis, solar cells, gas
sensors, and corrosion-control coatings. Pure TiO2 pellets or
beads tend to be brittle and susceptible to attrition or
fragmentation under mild stress and shear forces. TiO2 powders
are active because they have a high specific surface area, but
removing the powder catalyst from the reaction bulk media can be
troublesome. Thus TiO2 film coatings have attracted considerable
interest in the last decade. Film coatings make available the
catalytic properties of TiO2 whi