Heterogenous Degradation of Toxic Organic Pollutants by Hydrophobic Iron(Ⅲ) Schiff Base Complex Under Visible Irradiation

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (1): 105.

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Heterogenous Degradation of Toxic Organic Pollutants by Hydrophobic Iron(Ⅲ) Schiff Base Complex Under Visible Irradiation

CAO Ting-Ting, ZOU Cai-Qiong, LUO Guang-Fu, CHEN Deng-Xia, ZHAO Xiao-Rong, LI Rui-Ping, HUANG Ying-Ping*

Engineering Research Center of Eco\|environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China

Received:2010-06-02 Revised:2010-11-15 Online:2011-01-10 Published:2010-12-11
Contact: Huang Yingping E-mail:chem_ctgu@126.com
Supported by:
国家自然科学基金(批准号: 20877048, 50979049)、湖北省高校优秀中青年创新团队计划(批准号: T200703)和湖北省自然科学基金创新群体项目(批准号: 2009CDA020)资助.

Abstract

Abstract: A hydrophobic Iron(Ⅲ) Schiff Base complex, Fe-Bis-Schiff-base-salicylaldehyde-o- Phenylenediamine (Fe-SPA), was prepared by chemical synthetic method. In a water-soluble medium, the hydrophobic Fe-SPA could be used as a heterogeneous photocatalyst to degradate organic pollutants. The photo-catalytic degradation of Rhodamine B (RhB), Methylene Blue trihydrate(MB) and 2, 4-dichlorophenol (2,4-DCP) under the visible irradiation and neutral condition (at pH 7.2) were used as probe reactions to evaluate the photo-catalytic activities of Fe-SPA. Under the optimal conditions, RhB was decolored completely in 150min, MB was decolored completely in 300min, and DCP was removed more than 65% in 10h. ESR results showed that the highly reactive oxygene species ?OH was produced in the reaction. IR and Uv-Vis results indicated that RhB was degraded to small moleculars, such as amine substances and carbonyl (carboxyl) compounds. In a water-soluble medium, the hydrophobic Fe-SPA which was used as a heterogeneous photocatalyst is stable after 5 recycles.

Key words: Fe(Ⅲ) shiff base, photocatalytic, toxic organic pollutants

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CAO Ting-Ting, ZOU Cai-Qiong, LUO Guang-Fu, CHEN Deng-Xia, ZHAO Xiao-Rong, LI Rui-Ping, HUANG Ying-Ping*. Heterogenous Degradation of Toxic Organic Pollutants by Hydrophobic Iron(Ⅲ) Schiff Base Complex Under Visible Irradiation[J]. Chem. J. Chinese Universities, 2011, 32(1): 105.

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Heterogenous Degradation of Toxic Organic Pollutants by Hydrophobic Iron(Ⅲ) Schiff Base Complex Under Visible Irradiation

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