Process for producing tio2 based photocatalytic coating, the tio2 based coating obtained by the process and various articles with coating applied thereon

An air purifying article comprising:

• a base element;
• and
• a photocatalytic material having,including:
• a doped TiO2 substrate capable of exhibiting photo catalytic behavior on being exposed to visible light, the doped TiO2 substrate being in a form of TiO2 nano rods, and
• a polymeric adhesive that enhances an adhering property of the photocatalytic material capable of being adhered to the base element, 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, and
• propylene glycol added in an amount in a range of about 2 percent by weight.

A photocoat sheet comprising:

• a base sheet;
• and
• a photocatalytic material coated on the base sheet, the photocoat material including:
• a doped TiO2 substrate capable of exhibiting photo catalytic behavior on being exposed to visible light, the doped TiO2 substrate being in a form of TiO2 nano rods, and
• a polymeric adhesive that enhances an adhering property of the photocatalytic material capable of being adhered to the base element, 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, and propylene glycol added in an amount in a range of about 2 percent by weight.