Photocatalyst-binder compositions
First Claim
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1. A process for removing organic compounds from a fluid, the process comprising:
- contacting a photocatalytic surface with a fluid containing an organic compound to be removed, the photocatalytic surface being responsive to incident light and comprising particles of a photocatalyst dispersed in a binder, the particles having a diameter of 50 nm or less, the binder having an oxidizable carbon content of less than 15%; and
exposing the contacted photocatalytic surface to incident light for a period of time sufficient to degrade at least a portion of the organic compound.
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Abstract
A photocatalyst composition containing a substantially non-oxidizable binder which allows large amounts of photocatalytic particles to be adhered to a surface. Upon application to a surface, the composition dries or cures to form an adherent, abrasion-resistant, thermostable, and photocatalytic coating.
76 Citations
24 Claims
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1. A process for removing organic compounds from a fluid, the process comprising:
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contacting a photocatalytic surface with a fluid containing an organic compound to be removed, the photocatalytic surface being responsive to incident light and comprising particles of a photocatalyst dispersed in a binder, the particles having a diameter of 50 nm or less, the binder having an oxidizable carbon content of less than 15%; and exposing the contacted photocatalytic surface to incident light for a period of time sufficient to degrade at least a portion of the organic compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for removing organic compounds from a fluid, the process comprising:
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contacting a photocatalytic surface with a fluid containing an organic compound to be removed, the photocatalytic surface being responsive to incident light and comprising particles of a photocatalyst dispersed in a binder, the particles having a diameter of 50 nm or less, the binder having a backbone wherein less than one in six atoms of the backbone is oxidizable carbon; and exposing the contacted photocatalytic surface to incident light for a period of time sufficient to degrade at least a portion of the organic compound. - View Dependent Claims (20, 21, 22, 23)
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24. A process for removing organic compounds from a fluid, the process comprising:
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contacting a photocatalytic surface with a fluid containing an organic compound to be removed, the photocatalytic surface being responsive to incident light and comprising particles of a photocatalyst dispersed in a binder, the particles having a diameter of 50 nm or less, the binder having an oxidizable carbon content of less than 10% after curing for six months; and exposing the contacted photocatalytic surface to incident light for a period of time sufficient to degrade at least a portion of the organic compound.
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Specification