Surfaces and coatings for the removal of carbon dioxide
View Patent ↗Apparatus suited for removing carbon dioxide from gases are disclosed. The apparatus may employ bodies having a photocatalytic film. Associated methods and compositions are also disclosed.
1. A body comprising:
a substrate;
a photocatalytic film disposed on the substrate; and
a receptor layer in communication with the photocatalytic film, wherein the body is capable of removing at least about 10 ppm/minute CO 2 gas from a gas stream comprising 1 vol. % CO 2 per square meter of photocatalytic film surface area.
2. The body of claim 1 , wherein the photocatalytic film comprises:
a matrix;
semiconductor particles within the matrix; and
a charge transfer agent within the matrix.
3. The body of claim 1 , wherein the substrate comprises aluminum.
4. The body of claim 3 , wherein the substrate is selected from the group consisting of aluminum alloys and aluminum foams.
5. The body of claim 4 , further comprising:
an organic layer between the substrate and the photocatalytic film.
6. The body of claim 5 , further comprising:
a barrier layer between the photocatalytic film and the organic layer.
7. A body comprising:
a substrate;
a photocatalytic film disposed on the substrate, wherein the photocatalytic film comprises:
an amorphous matrix comprising titanium dioxide;
titanium dioxide particles dispersed in the amorphous matrix; and
an alkaline material dispersed in the amorphous matrix
a receptor layer between the substrate and the photocatalytic film, wherein the receptor layer comprises a receptor agent;
wherein the body is capable of removing at least about 10 ppm/minute CO 2 gas from a gas stream comprising 1 vol. % CO 2 per square meter of photocatalytic film surface area.
8. The body of claim 7 , wherein the alkaline material comprises sodium.
9. The body of claim 8 , wherein the receptor agent comprises calcium.
10. The body of claim 9 , further comprising:
a pollution attraction agent within the amorphous matrix of the photocatalytic film.
11. The body of claim 10 , wherein the substrate comprises aluminum.
12. The body of claim 11 , wherein the substrate is selected from the group consisting of aluminum alloys and aluminum foams.
13. The body of claim 12 , further comprising:
an organic layer between the substrate and the photocatalytic film.
14. The body of claim 13 , further comprising:
a barrier layer between the photocatalytic film and the organic layer.
15. The body of claim 7 , wherein the substrate is a photovoltaic cell.
16. The body of claim 7 , wherein the substrate predominantly comprises a non-metal.