초록 ▼

The subject of the invention is a glass-, ceramic- or vitroceramic-based substrate (1) provided on at least part of at least one of its faces with a coating (3) with a photocatalytic property containing at least partially crystalline titanium oxide. It also relates to the applications of such a subs

The subject of the invention is a glass-, ceramic- or vitroceramic-based substrate (1) provided on at least part of at least one of its faces with a coating (3) with a photocatalytic property containing at least partially crystalline titanium oxide. It also relates to the applications of such a substrate and to its method of preparation.

대표청구항 ▼

1. A self-cleaning article of manufacture, comprising: a glass-, ceramic-, or vitroceramic-based substrate having at least one surface over which organic contaminants are expected to accumulate, a photocatalytically-activated self-cleaning coating of a photocatalytically-activated self-cleaning

1. A self-cleaning article of manufacture, comprising: a glass-, ceramic-, or vitroceramic-based substrate having at least one surface over which organic contaminants are expected to accumulate, a photocatalytically-activated self-cleaning coating of a photocatalytically-activated self-cleaning and at least partially crystalline titanium oxide deposited on said at least one surface by sol-gel or liquid spray pyrolysis, and a barrier layer with respect to alkali metals between said at least one surface and the coating which comprises a member selected from the group consisting of silicon nitride, silicon oxynitride, silicon oxycarbide, Al2O3:F, and aluminum nitride. 2. The self-cleaning article of manufacture of claim 1, wherein the crystalline form of the titanium dioxide is selected from the group consisting of anatase, rutile, and combinations of anatase and rutile. 3. The self-cleaning article of manufacture of claim 1, wherein the self-cleaning coating has a thickness between 5 nm and 1 micron. 4. The self-cleaning article of manufacture of claim 1, wherein the photocatalytically-activated self-cleaning coating is photocatalytically-activated to be self-cleaning upon irradiation with ultraviolet radiation. 5. The self-cleaning article of manufacture of claim 1, which further comprises one or more ultraviolet lamps. 6. The self-cleaning article of manufacture of claim 1, wherein the barrier layer comprises silicon nitride. 7. The self-cleaning article of manufacture of claim 1, wherein the barrier layer comprises silicon oxynitride. 8. The self-cleaning article of manufacture of claim 1, wherein the barrier layer comprises silicon oxycarbide. 9. The self-cleaning article of manufacture of claim 1, wherein the barrier layer comprises Al2O3:F. 10. The self-cleaning article of manufacture of claim 1, wherein the barrier layer comprises aluminum nitride.