Photocatalytic degradation of Acid Blue 62 over CuO-SnO2 nanocompositephotocatalyst under simulated sunlight
XIA Hui-li , ZHUANG Hui-sheng , ZHANG Tao , XIAO Dong-chang
DOI:
Received November 19, 2006,Revised February 25, 2007, Accepted , Available online
Volume 19,2007,Pages 1141-1145
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The novel CuO-SnO2 nanocomposite oxide photocatalysts were prepared by simple co-precipitation method, and characterized by Xray
di raction, transmission electron microscopy, N2 adsorption-desorption measurement and UV-Vis di use reflectance spectroscopy.
The photocatalytic activities of CuO-SnO2 , evaluated using the photodegradation of Acid Blue 62 as a probe reaction under the
irradiation of Xenon light, were also found to be related to the calcination temperature and the molar ratio of Cu to Sn. The maximum
photocatalytic activity of the CuO-SnO2 photocatalyst was observed to be calcined at 500℃ for 3 h (the molar ratio of Cu to Sn was
1:1) due to the sample with good crystallization and high surface area. It also showed much higher photocatalytic activity in treatment
dye wastewater under simulated sunlight irradiation compared to Degussa P25 TiO2 .
