Preparation and Characterization of TiO2 and Apatite Coated Photocatalyst.

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  • ＴｉＯ２／アパタイト担持光触媒の作製と性質
  • TiO2 アパタイト タンジ ヒカリ ショクバイ ノ サクセイ ト セイシツ

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A novel photocatalyst was fabricated by coating TiO2 and successively apatite on a fibrous ceramic body through the following procedure. At the first step, TiO2 from Ti[(CH3)2CHO]4 was deposited on the fibrous body by means of the sol-gel method (TiO2 coated photocatalyst). Then, the resulting TiO2 coated photocatalyst was soaked for 24h at 37°C in a simulated body fluid with the phosphate ion concentration much higher than that in the human body plasma. By this soaking treatment, apatite crystals were formed on this TiO2 coated photocatalyst (TiO2 and apatite coated photocatalyst). It was observed that the composited coating of apatite improved the adsorption ability of TiO2 coated photocatalyst for colon bacillus, acetaldehyde and methylene blue, and eventually, the TiO2 and apatite coated photocatalyst could effectively decompose them.

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