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One-pot synthesis of bifunctionalized TiO2 mesoporous photocatalyst with visible light response

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Abstract

A series of Fe-doped SH/TiO2 mesoporous photocatalysts have been firstly prepared by one-pot method using P123 as structure-directing agent. This bifunctionalized mesoporous TiO2 possesses perfect anatase crystal structure and high surface area. The surface area of Fe-doped SH/TiO2 mesoporous material is 4 times higher than that of P25. Based on the EPR results, it was found that trivalent Fe ions exist at low spin state and substitutes a part of Ti4+ ions into TiO2 lattice. Fe-dropping in TiO2 extends the adsorption band side of the resulting material to about 600 nm. Much high photocatalytic activity in the degradation of phenanthrene was obtained on the bifunctionalized mesoporous TiO2 under visible light irradiation (λ > 420 nm), which is 6 times higher than that of pristine mesoporous TiO2. The enhancement in the photocatalytic activity of bifunctionalized TiO2 is ascribed to the extended absorption to visible light and strong interaction between SH-groups and PHE molecules.

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Acknowledgments

This work was financially supported by NSFC (21273111, 21273106, 51272101), the National Basic Research Program of China (973 Program, 2013CB632404) and the Jiangsu Provincial Natural Science Foundation (No.BK20130053); The authors thank Analysis Center of Nanjing University for the sample characterization.

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Authors and Affiliations

  1. Eco-materials and Renewable Energy Research Center (ERERC), School of Chemistry and Chemical Engineering, National Laboratory of Solid State Microstructures, Kunshan Innovation Institute of Nanjing University, Nanjing, 210093, China

    Jun Zhou, Ying Wang, Chenghai Ma & Zhigang Zou

  2. Jiangsu Key Laboratory for Nanotechnology, Nanjing, 210008, China

    Long Liu, Ying Wang & Zhigang Zou

Authors
  1. Jun Zhou
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  2. Long Liu
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  3. Ying Wang
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  4. Chenghai Ma
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  5. Zhigang Zou
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Correspondence to Ying Wang or Zhigang Zou.

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Zhou, J., Liu, L., Wang, Y. et al. One-pot synthesis of bifunctionalized TiO2 mesoporous photocatalyst with visible light response. J Porous Mater 22, 313–319 (2015). https://doi.org/10.1007/s10934-014-9898-0

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