Laboratory-scale experiments have shown that n-TiO2-coated surfaces accelerate the natural, solar-assisted oxidation of organic compounds. This technology should prove useful for producing such items as self-cleaning paints, windows, and ceramic tiles. Further, catalyzed photooxidation can be used to oxidize organic contaminates from closed ventilation systems of residences, commercial buildings, and airplanes. Application of this technology should lead to decreased use of cleaning solvents and industrial and household cleansers, while affording an equivalent level of cleanliness. Used in ventilation systems, this technology provides clean air while reducing filter use; thus, reducing the number of air conditioner filters requiring disposal as hazardous waste. In addition to cleaning the air, such a system would be self-cleaning. Outdoor industrial equipment could be coated with n-TiO2 to continuously oxidize organic contaminants such as hydraulic fluids, electrical transformer oil, and polychlorinated biphenyls.The potential commercial application as described by the awardee: Research will lead to reduced PCB contamination of electrical transformers; self-cleaning paints, windows, and ceramic tiles; reduced use of cleaning solvents and cleansers; reduced levels of organic contaminants in air; and reduced need for hazardous waste disposal of air filters.
