esearches on the application of loaded nanometer TiO2 photocatalysis to the degradation of acid red 52
Received date: 2005-02-20
Online published: 2010-10-01
The loaded nanometer TiO2 photocatalysis is prepared by sol-gel method, being dipped for several times. Photocatalysis, oxidation for the degradation of acid red 52(AR) has been studied. The effect of dipping times and calcination temperature on photocatalysis activity have been investigated. The results show that the photocat-alysis activity is the best when the dipping times is 3 and the calcination temperature is 550℃. The activity of catalysis which is adulterated with La has been studied and a comparison of its activity to P25 is made. After being adulterated with La, its catalysis activity is improved obviously. The photocatalysis activity is 13.5% higher than P25. At the same time, a kinetics study of the loaded TiO2/silica gel has been made. The results indicate that the process of degrading AR by photocatalysis accords with the pseudo-first-grade-reaction-kinetics model.
Key words: photocatalysis; acid red 52; titanium dioxide
Yang Yuwang, Ji Min, Fu Jianfeng, Liu Jingli, Zhang Lei, Xu Yan, Sun Yanmin . esearches on the application of loaded nanometer TiO2 photocatalysis to the degradation of acid red 52[J]. Industrial Water Treatment, 2005 , 25(7) : 38 -41 . DOI: 10.11894/1005-829x.2005.25(7).38
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