Photocatalytic degradation of omethoate using NaY zeolite-supported TiO<sub>2

doi:10.1007/s11705-009-0053-4

Front Chem Eng Chin

2009, Vol. 3

Issue (2) : 206-210 https://doi.org/10.1007/s11705-009-0053-4

RESEARCH ARTICLE

Photocatalytic degradation of omethoate using NaY zeolite-supported TiO₂

Dishun ZHAO^1,3(

), Jialei WANG¹, Zhigang ZHANG², Juan ZHANG³

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

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Abstract

The degradation of omethoate was conducted using H₂O₂ as oxidant, TiO₂ 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 TiO₂ 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 TiO₂/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 TiO₂ 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%.

Keywords TiO₂ NaY zeolite photocatalytic degradation omethoate

Corresponding Author(s): ZHAO Dishun,Email:dishunzhao@yahoo.com.cn

Issue Date: 05 June 2009

Cite this article:

Dishun ZHAO,Jialei WANG,Zhigang ZHANG, et al. Photocatalytic degradation of omethoate using NaY zeolite-supported TiO_{2[J]. Front Chem Eng Chin,
2009, 3(2): 206-210.}

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-009-0053-4
https://academic.hep.com.cn/fcse/EN/Y2009/V3/I2/206

Fig.1 Schematic diagram of experimental apparatus
1 condenser tube; 2 inlet of water; 3 inlet of air; 4 silicon cold trap; 5 glass reactor; 6 magnetic stirrer; 7 bracket of reactor; 8 Hg lamp; 9 outlet of air; 10 outlet of water

Fig.2 XRD patterns of NaY zeolite and calcination of photocatalyst; a NaY; b TiO/NaY zeolite (Condition: calcination temperature 550°C, 35.2 wt-% TiO)

Fig.3 IR patterns of NaY zeolite and TiO/NaY photocatalyst TiO loading content (wt-%): a 48.42; b 45.65; c 42.56; d 39.10; e 35.20; f 30.76; g 25.72

Fig.4 Effect of different content of TiO on photodegradation rate of omethoate

Fig.5 Effect of calcination temperature on photodegradation rate of omethoate

Fig.6 Effect of pH value on photodegradation rate

Fig.7 Effect of amount of TiO/NaY

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