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Simple preparation of Mn–N-codoped titania photocatalyst with visible light response

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Abstract

Mn–N-codoped TiO2 nanocrystal photocatalysts responsive to visible light were synthesized for the first time by a simple hydrothermal synthesis method. X-ray powder diffraction (XRD) measurement indicated that all the photocatalysts have an anatase crystallite structure, and that increase of the doping concentration had little effect on the structure and particle size. Compared to N-doped TiO2, a shift of the absorption edge of Mn–N-codoped TiO2 to a lower energy and a stronger absorption in the visible light region were observed. The Mn–N-codoped TiO2 showed higher photocatalytic reactivity than undoped TiO2 or N-doped TiO2 for the photodegradation of rhodamine B (RhB) under visible light irradiation. The highest photocatalytic activity was achieved on 0.4 mol% Mn–N–TiO2 calcined at 673 K.

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Acknowledgments

This work was supported by National Natural Science Foundation of China (20807015), Ph.D. Programs Foundation of Ministry of Education of China (200805611055), and Scientific Research Foundation for Returned Scholars, Ministry of Education of China.

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Authors and Affiliations

  1. College of Environmental Science and Engineering, South China University of Technology, The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, Guangzhou, People’s Republic of China

    Yun Hu, Xia Zhang & Chaohai Wei

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  1. Yun Hu
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  2. Xia Zhang
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  3. Chaohai Wei
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Correspondence to Yun Hu.

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Hu, Y., Zhang, X. & Wei, C. Simple preparation of Mn–N-codoped titania photocatalyst with visible light response. Res Chem Intermed 36, 95–101 (2010). https://doi.org/10.1007/s11164-010-0118-5

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  • DOI: https://doi.org/10.1007/s11164-010-0118-5

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