本文
No.5(2002)22.The development of decomposition method and removal equipment of the formaldehyde in living environment using the photocatalyst
Kunihiko HIGASHI, Kenji OTSUKA, Kensuke KAWARADA, Akira HASEGAWA, Hideki SIMIZU, Midori HOSHINO and Takefusa NAKAMURA
The living environment was deteriorated by the formaldehyde emitted from the building materials such as plywood, wallpaper and flooring. Thus, decomposition and removal of the formaldehyde using the photocatalyst were examined.
The titanium dioxide sol was synthesized from titanium tetra -n- butoxide, ethanol and water. The sol was applied to the silica glass tube by dip and spraying method and the titanium dioxide fixed with silica glass tube changed in the anatase type, when it was baked. The photocatalyst was made with this anatase type titanium dioxide supported the palladium. It is possible that titanium dioxide supported the palladium maintains the photocatalyst ability for long times. In the case of using the photocatalyst supported the palladium with irradiated ultraviolet ray, the gas contained the formaldehyde 100ppm could decompose over 90%.
Keywords
Formaldehyde, Photocatalyst, Titanium dioxide, Supported the palladium maintains, Living environment