Degradation of Contaminated Industrial Waste Water using Sol-Gel Derived Ru-doped TiO2 Photocatalytic Films
Küçük Resim Yok
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Foundation Environmental Protection & Research-Fepr
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, Ru-TiO2 films were deposited on glass substrates with a sol-gel route for degradation of contaminated industrial water. A solution with the Ru/Ti molar ratio of 0.05 was prepared using ruthenium and titanium based precursors. Solution characterizations were made using a turbidimeter and pH meter. The gel films, prepared by the sol-gel drop casting method, were dried at 300 degrees C for 10 minutes and subsequently heat-treated at 500 degrees C for 5 minutes in air. After that, the oxide thin films were annealed at 600 degrees C for 60 minutes in air. In order to evaluate the phase structure, microstructure, optical, and photocatalytic properties of the coatings, they were investigated using XRD, SEM, and UV/Vis spectrophotometer, respectively. The obtained phase was mostly anatase TiO2. Photo-oxidation experiments were performed to obtain the photocatalytic activity of the films on impure water using an UV light source. The absorption spectrum of the water samples taken from Cigli Industrial Plant and Gediz River in Izmir/Turkey showed that they have absorbance bands in the range of 300 nm and 500 nm. The Ru doped TiO2 films exhibited highly photocatalytic activity to decompose organic species in contaminated waters. The degradation percentage ratios were calculated as 75% and 62% for two different industrial water samples.
Açıklama
Anahtar Kelimeler
Impure or (contaminated), water degradation, photocatalytic activity, sol-gel method, TiO2 thin film
Kaynak
Ekoloji
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
22
Sayı
88
