サンカ チタン ヒカリ ショクバイ ニ ヨル ヨウショクギョ ミズ カンキョウ ノ カイゼン コウカ

TiO2 (anatase) was coated on porous silica gel balls via sol-gel process and subsequent calcination at 550℃ and 600℃ for 3h. Photocatelytic Properties of TiO2 coated silica gel was examined. Methylene blue was completely decomposed by TiO2 coated silica gel under irradiation of black light lamp for 24h. The number of coliform bacterium in aquaculture water which is circulated in antibacterial photocatalysis system with TiO2 coated silica gel and black light lamp was measured. TiO2 coated silica gel showed remarkable antibacterial action