PROCESS FOR PRODUCING TIO2 BASED PHOTOCATALYTIC COATING, THE TIO2 BASED COATING OBTAINED BY THE PROCESS AND VARIOUS ARTICLES WITH COATING APPLIED THEREON

摘要

A water soluble photocatalytic material capable of being adhered to an article by a conventional coating process is described. The photocatalytic material includes a doped metal oxide substrate capable of exhibiting photocatalytic behavior on being exposed to visible light, wherein particle size of doped metal oxide substrate ranges from about 18 nanometer (nm) to about 35 nm. Further, the photocatalytic material includes a polymeric adhesive for improving the adhering property of the doped metal oxide substrate on the article. In addition, a process for producing the water soluble photocatalytic material is described. Further, an air purifying article, such as a sheet, on which the said photocatalytic material is applied to is also described.

主权项

1. A water soluble photocatalytic material capable of being adhered to an article by a coating process, the water soluble photocatalytic material comprising:
a) a doped TiO2 substrate capable of exhibiting photocatalytic behavior on being exposed to visible light, the doped TiO2 substrate being in a form of TiO2 nano rods; and b) a polymeric adhesive that enhances an adhering property of the water soluble photocatalytic material capable of being adhered to the article, wherein the polymeric adhesive comprises:
an acrylic copolymer added in an amount in a range of about 55 percent by weight to about 65 percent by weight,calcium carbonate added in an amount in a range of about 25 percent by weight to about 40 percent by weight, andpropylene glycol added in an amount in a range of about 2 percent by weight.