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2009, Volume 3, Issue 2

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Frontiers of Chemical Science and Engineering >> 2009, Volume 3, Issue 2 doi: 10.1007/s11705-009-0053-4

Photocatalytic degradation of omethoate using NaY zeolite-supported TiO

1. School of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2. Shijiazhuang Chaoyang Safety Evaluation Advisory Ltd., Shijiazhuang 050051, China; 3. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Available online: 2009-06-05
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Abstract

The degradation of omethoate was conducted using H O as oxidant, TiO supported on NaY zeolite as photocatalyst and a 300 W lamp as light source. The effect of the calcination temperature of the photocatalyst, the amount of TiO loaded on NaY zeolite, the photocatalyst amount, the pH value and the radiation time on the degradation ratio of omethoate were investigated. The results show that TiO /NaY zeolite photocatalyst prepared by sol-gel method had good photocatalysis. The photocatalytic optimum oxidation conditions of omethoate are as follows: the calcination temperature of the photocatalyst is 550°C,the amount of TiO loaded on NaY zeolite is 35.2 wt-%, the amount of photocatalyst is 5 g/L, pH=8 and the radiation time is 180 min. Under these conditions, the removal ratio of omethoate is up to 93%.

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