洪桂彬老師的歷程檔案

期刊名稱	Su, T. L.; Y. Ku; G. B. Hong and H. W. Chen, “Photodegradation of o-cresol using light emitting diodes with various wavelengths in the presence of photocatalysts,” Environmental Engineering Science, 28, 535-542 (2011).
資料日期	2011-04-28

[英文摘要] :
Thin films of pure TiO2, silver-deposited TiO2, and platinum-deposited TiO2 were prepared on quartz substrates
by a dip-coating process for the photodecomposition of o-cresol under light emitting diodes (LEDs) irradiation
instead of a traditional lamp. In this work, effects of noble metal doping, periodic illumination, and LEDs
wavelength on the photoactivity, electrical energy consumption, and quantum yield were explored in an effort to
better understand the roles of noble metal and LEDs characterization in photocatalytic reactions. Degradation of
o-cresol under LED irradiation increased with the decreased wavelength of LEDs, due to the higher power
energy of a photon. Pt/TiO2 films on quartz substrates prepared by a photodeposition method exhibited excellent
optical characteristics, energy savings, and visible light–induced photocatalytic properties compared with
Ag/TiO2 and pure TiO2 (P25). EEO increased from 22 to 31 kWh/m3/order indicating that energy consumption
for periodic illumination was significantly lower than continuous illumination under similar experimental
conditions. This study showed the feasible and potential use of LEDs in photocatalysis.