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- W2361255807 abstract "Two major problems encountered in the photocatalytic disinfection using TiO 2 ultrafine particles are the counting of the bacteria number and the recovery of the photocatalyst particles from the purified water. A novel TiO 2 photocatalyst immobilized on a glass spring support was developed for solving the problems. The catalyst was used in the photocatalytic disinfection of E.coli in water under the irradiation of blue-black UV light. The disinfection efficiency with UV light in the presence of TiO 2 is much higher than that with UV light only. There is an induction period of about 15 min at the beginning of the photocatalytic disinfection process. The SEM and TEM photographs of the bacteria taken at different photocatalytic reaction time show that the photocatalytic reaction takes place on the cell walls and cell membranes of bacteria, breaking and then killing the cells. The effects of catalyst preparation conditions on the photocatalytic disinfection were investigated. The TiO 2 slurry concentration, dip-coating cycle, and heat treatment have influence on the disinfection efficiency. High TiO 2 slurry concentration results in more non-uniform distribution of TiO 2 on the support and high calcination temperature makes the ultrafine TiO 2 particles agglomerate and sinter. The disinfection efficiency is improved with increasing dip-coating cycle. The optimum conditions for the preparation of the immobilized photocatalyst are 2% TiO 2 slurry concentration, 4 dip-coating cycles, and calcination at 400 ℃ for 2 h." @default.
- W2361255807 created "2016-06-24" @default.
- W2361255807 creator A5058589650 @default.
- W2361255807 date "2003-01-01" @default.
- W2361255807 modified "2023-09-25" @default.
- W2361255807 title "Photocatalytic Disinfection by TiO_2 Immobilized on Glass Springs" @default.
- W2361255807 hasPublicationYear "2003" @default.
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