Abstract
In recent years, air pollution is one of the big environmental problems. Especially a demand for high quality air is increasing from the view of the living and health life. It is important that we promote effective measures for a bad smell hastily. Various ideas were suggested and have been used, but the decisive solution has not been developed yet. This paper relates to new deodorization system by utilizing condensation phenomenon with photocatalyst. As stable semiconductor which shows a photocatalyst effect, TiO2 is widely used, however, TiO2 needs ultraviolet rays. In order to solve this inconvenience, we showed an effect under the visible ray by using visible ray type photocatalyst and light emitting diodes (LED). Furthermore, for this system, energy saving by the pulse irradiation using high-speed responsiveness of the LED was confirmed experimentally.
