About the Technology

Photocatalytic Oxidation

In 1967, Dr. Akira Fujishima began experiments measuring the effect of sunlight on titanium dioxide. He found bubbles of oxygen coming out when he put crystals of titanium dioxide in water and exposed it to sunlight. He found this process to be remarkably similar to the photosynthesis process that plants use to produce oxygen from sunlight. Further experiments led to the discovery of “oxidative degradation” properties of sunlight and titanium dioxide.

This means titanium dioxide, when excited by sunlight or, more specifically, ultraviolet light, produces enough power to break down many harmful elements and odiferous vapors at the molecular level that comes close to the surface of the titanium dioxide.

There are many practical applications for oxidative degradation, also referred to as “photocatalytic oxidation” (PCO).

For instance, titanium dioxide mixed with paint used for street signs creates photocatalytic oxidation, or breakdown, of soot and greasy dirt, which in turn allows rain to wash the signs clean. The net effect is the creation of self-cleaning road signs. Many other titanium dioxide applications have been utilized in commercial products, like sunscreen lotions, self bleaching clothing, and super hydrophilic side view mirrors for cars.

Zentox Pure Air Systems moves contaminated air through a thickness of fibrous glass media, which creates a tortuous path for pathogens dramatically increasing exposure to the countless molecular reaction sites. In contrast, other PCO devices simply move air through thinly coated surfaces within a chamber.

Embedding catalyst of fumed titanium dioxide nanoparticles via a proprietary process into a fibrous glass media vastly increases the number of molecular reaction sites that leads to dramatically improved performance and efficiency.

Powerful airflow rates allow Zentox Pure Air systems to process ambient air three times per hour, insuring continuous pure air.