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    题名: Enhancing photocatalytic ability of TiO2 films using gel-derived P/Si-TiO2powder
    作者: Yu, Hsuan-Fu;Cheng, Chao-Wei
    关键词: TiO2 films;Photocatalysis;Kinetics;Dye degradation;Optical properties;Microstructure
    日期: 2021-01-16
    上传时间: 2021-08-19 12:13:01 (UTC+8)
    摘要: P/Si-TiO2 photocatalytic thick films on FTO glass substrates were prepared. TiO2 thin films, as base layer, were first coated on substrates using a spin-coating technique. The slurry containing P/Si-TiO2 nanoparticles was bar-coated on the surface of TiO2 base layer, followed by calcining at 550 °C. The resultant films were characterized using x-ray diffractometer, scanning electron microscope, UV–Vis spectrophotometer, crosscut adhesion test, and recycling-use test. Under 365-nm UV-light irradiation, abilities of the films to photocatalytically degrade methylene blue were evaluated. The apparent rate laws obeyed 1st-order and the corresponding reaction rate constants (k′), based on the coated area of substrates, were estimated. k′ of the thick film (thickness: 6.5 μm; composition: P/Si-TiO2 anatase crystallites with 16 nm average size) was 49.0 L/(m2-sub. h), which was about eight times of that of the thin film (k′ = 6.2 L/(m2-sub. h); thickness: 215 nm; composition: pure TiO2 anatase crystallites with 8-nm average size).
    關聯: Journal of Sol-Gel Science and Technology ,97,p.259–270
    DOI: 10.1007/s10971-020-05450-5
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文


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