Photocatalyst-carrying structure and photocatalyst coating material

A coating material of a photocatalyst comprising 0.001 to 5% by weight silicon compounds;

• 0.1 to 30% by weight of a metal oxide sol and/or a metal hydroxide sol, on the solid component basis and from 0.1 to 30.0% by weight on the solid component basis a photocatalyst powder and/or sol.

A coating of a photocatalyst used for producing a photocatalyst-carrying structure wherein an adhesive layer is disposed between a photocatalyst layer and a substrate wherein the coating comprises two coating materials (1) and (2), wherein

• (1) is a coating material for forming said adhesive layer and wherein (1) comprises a resin component, said resin component comprising from 1 to 50% by weight of a silicon-modified resin containing 2-60% by weight of silicon and either a resin containing 3-60% by weight of polysiloxane or a resin containing 5-40% by weight of colloidal silica, and
• (2) a coating material for forming a photocatalyst layer onto the adhesive layer comprise 0.001-5% by weight of a silicon compound, 0.1-30% by weight of a metal oxide sol and/or a metal hydroxide sol on the solid component basis and 0.1-30% by weight of a photocatalyst powder and/or sol on the solid component basis.