Indoor air quality has become a concern. Sick building syndrome, volatile organic compounds, and toxic mold are just a few of the issues.
Titanium Dioxide deals with each and every issue when it comes to air quality. Due to its photo-catalytic properties it breaks down any contaminant in the air and purifies it.
I can attest that it definitely cleans out smoke odor because I use it in my business on a daily basis for the last nine years. When people have smoke odor in their car, I mist the entire cabin and roll the windows down. Within eight hours the odor is gone.
Photocatalytic oxidation (or photocatalysis) can be used to convert undesirable compounds present in gas or liquid samples into carbon dioxide and water. Photocatalyst materials are “self-generating”, making the process especially attractive in moderate and long-term applications where consumable materials are to be avoided (e.g., Space Shuttle cabins and in the International Space Station).
Photocatalytic studies have traditionally been performed in the presence of a single test compound—a single component system. However, real world application of the technology will most certainly occur in the presence of multiple reactive compounds.
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In this study, single component photo-catalysis experiments were performed on a set of three-carbon compounds that contain different functionality (propane, propene, acetone and propanal). The relative time required for degradation of the compounds was directly dependent upon the predicted affinity for the catalyst surface. In multi-component experiments, compounds with lower affinity for the catalyst surface did not degrade until the higher affinity compounds were reduced to insignificant levels.
The presence of toxic vapors from a variety of sources represents a significant burden to indoor air quality. Chemicals such as tetrachloroethylene (used extensively in dry cleaning establishments), formaldehyde (used in the manufacture of carpeting, furniture, andparticleboard), and the vapors from liquid organic solvents (used frequently in the printing industry and in analytical laboratories) are often present at elevated levels in enclosed environments, especially those with limited ventilation.
Gas-phase photocatalytic oxidation (orphotocatalysis) over UV-illuminated semiconductor constitutes a very promising technique for the destruction of organic and inorganic contaminants especially in situationswhere consumable materials are undesirable.
Unlike traditional catalytic processes that occur at high temperatures ,photocatalysis occurs readily even at near-ambient temperatures. Unlike filtration, which merely transfers contaminants to a different phase (e.g. via adsorption onto activated carbon) and requires the replacement and disposal of depleted treatment units, photocatalytic treatment systems are “self-generating”. Photocatalytic processes chemically oxidize (or convert) organic compounds into carbon dioxide and water—