Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation

doi:10.1016/S1872-2067(12)60688-3

催化学报 ›› 2013, Vol. 34 ›› Issue (12): 2209-2216.DOI: 10.1016/S1872-2067(12)60688-3

Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation

Wan-Kuen Jo, Joon Yeob Lee

Department of Environmental Engineering, Kyungpook National University, Daegu, 702-701, Korea

收稿日期:2013-06-07 修回日期:2013-08-20 出版日期:2013-11-25 发布日期:2013-11-25
通讯作者: Wan-Kuen Jo

Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation

Wan-Kuen Jo, Joon Yeob Lee

Department of Environmental Engineering, Kyungpook National University, Daegu, 702-701, Korea

Received:2013-06-07 Revised:2013-08-20 Online:2013-11-25 Published:2013-11-25
Contact: Wan-Kuen Jo

摘要/Abstract

摘要：

Fe-TiO₂ photocatalysts with different ratios of Fe to Ti were prepared by a sol-gel process using tetra-n-butyl titanium and iron(Ⅲ) nitrate as Ti and Fe sources, respectively. The photocatalytic function of the prepared composites was examined for the decomposition of low-concentration (0.1 ppm) airborne benzene, toluene, ethyl benzene, and o-xylene (BTEX). The Fe-TiO₂ composites were characterized by energy dispersive X-ray spectroscopy, X-ray diffraction, UV-visible spectroscopy, and Fourier transform infrared spectroscopy. The time-series ratios of outlet to inlet concentrations of toluene, ethyl benzene, and o-xylene target chemicals, as determined by the Fe-TiO₂ composites under visible light exposure, were lower than or similar to those of the reference TiO₂photocatalyst. Moreover, the time-series ratios of outlet to inlet concentrations of the three compounds, as determined for the Fe-TiO₂ composites, increased as the ratio of Fe to Ti increased from 0.001 to 0.010. In contrast, under UV exposure, the time-series ratios of outlet to inlet concentrations of BTEX, determined for the Fe-TiO₂ composites, were similar to or higher than those obtained from the reference TiO₂ photocatalyst. Fe-TiO₂ composites with an optimal Fe to Ti ratio could effectively be applied for the purification of low-concentration aromatic organic pollutants.

关键词: Nanoparticle, Photocatalyst characteristic, Impregnation ratio, Indoor air purification

Abstract:

Key words: Nanoparticle, Photocatalyst characteristic, Impregnation ratio, Indoor air purification

Wan-Kuen Jo, Joon Yeob Lee. Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation[J]. 催化学报, 2013, 34(12): 2209-2216.

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Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation

Iron-impregnated titania composites for the decomposition of low-concentration aromatic organic pollutants under UV and visible light irradiation

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