PRODUCING METHOD OF TITANIA PHOTOCATALYST USING COAL FLY ASH AS A CARRIER

摘要

The present invention relates to the production of low-cost photocatalyst for expanding the usability of TiO ₂ photocatalyst.;Since the activity of the TiO ₂ photocatalyst was found to be larger as the particle diameter of the TiO ₂ fine powder was smaller, fine powders of 10 to 20 nm or less were prepared.;However, such fine powder tends to cause aggregation, leading to problems such as lowering the efficiency of the photocatalyst or limiting its use.;Therefore, in consideration of the availability of the photocatalyst, the fine TiO ₂ powder is used to be supported on a carrier, and a porous material such as zeolite is mainly used as the carrier.;However, since the photocatalytic reaction of TiO ₂ occurs only in the light (ultraviolet) light, it is not preferable to use a porous oxide as a carrier, and porous materials such as synthetic zeolites are expensive and increase the price of the photocatalyst. It is becoming.;The present invention has been made in order to improve the problems of the prior art operating as described above, the main object is to utilize a photocatalyst carrier as coal carrier as a waste of the power plant as a carrier, and the coating conditions and heat treatment conditions of TiO _{2 on} the carrier It is characterized by providing a method for producing a highly active and inexpensive TiO ₂ photocatalyst by controlling.