Korea Research Institute of Chemical Technology

Ji-Man Kim

Jong-San Chang

Sang-Eon Park

Dae Sung Kim

Jin-Soo Hwang

Hee Seok Chai

The present invention relates to a novel titania photocatalyst and its manufacturing method. More specifically, the present invention is to provide the quantum-sized novel titania photocatalyst prepared the steps comprising: (a) titanium tetraisopropoxide is encapsulated in zeolite support by adding citric acid to isopropyl alcohol; (b) ethylene glycol is dissolved herein to obtain a uniformly dispersed mixture solution; and (c) it is encapsulated in zeolite cavities. And thus, titania photocatalyst of the present invention has some advantages in that (a) it provides greatly increased surface area and photocatalytic activity due to the smaller granule than the commercial titania powder; (b) it is uniformly dispersed to quantum size zeolite cavities rather than forming large clusters caused by the aggregation of the conventional titania hyperfine powder; and (c) since the quantum efficiency of titania powder in the UV region is maximized thereby, it effectively and promptly removes the hazardous gas like ammonia and sulfide in the atmosphere and organic material in water waste through photo-oxidation reaction.

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Daejeon, South Korea

Ji-Man Kim