Enhancing photocatalytic ability of TiO2 films using gel-derived P/Si-TiO2powder
學年 109
學期 1
出版(發表)日期 2021-01-16
作品名稱 Enhancing photocatalytic ability of TiO2 films using gel-derived P/Si-TiO2powder
著者 Hsuan-Fu Yu; Chao-Wei Cheng
著錄名稱、卷期、頁數 Journal of Sol-Gel Science and Technology 97,p.259–270
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).
關鍵字 TiO2 films;Photocatalysis;Kinetics;Dye degradation;Optical properties;Microstructure
語言 en_US
期刊性質 國外
收錄於 SCI EI
國別 USA
出版型式 ,電子版,紙本

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120956 )