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Influence of NH3-treating temperature on visible light photocatalytic activity of N-doped P25-TiO2

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Abstract

The influence of NH3-treating temperature on the visible light photocatalytic activity of N-doped P25-TiO2 as well as the relationship between the surface composition structure of TiO2 and its visible light photocatalytic activity were investigated. The results showed that N-doped P25-TiO2 treated at 600°C had the highest activity. The structure of P25-TiO2 was converted from anatase to rutile at 700°C. Moreover, no N-doping was detected at the surface of P25-TiO2. There was no simply linear relationship between the visible light photocatalytic activity and the concentration of doped nitrogen, and visible light absorption. The visible light photocatalytic activity of N-doped P25-TiO2 was mainly influenced by the synergistic action of the following factors: (i) the formation of the single-electron-trapped oxygen vacancies (denoted as V ·o ); (ii) the doped nitrogen on the surface of TiO2; (iii) the anatase TiO2 structure.

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Authors and Affiliations

  1. Key Laboratory for Special Functional Materials, Henan University, Kaifeng, 475004, China

    WeiPing Chen, Yan Wang, ZhenSheng Jin, CaiXia Feng, ZhiShen Wu & ZhiJun Zhang

  2. College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China

    WeiPing Chen & ZhenSheng Jin

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  1. WeiPing Chen
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  2. Yan Wang
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  3. ZhenSheng Jin
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  4. CaiXia Feng
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Correspondence to ZhenSheng Jin.

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Chen, W., Wang, Y., Jin, Z. et al. Influence of NH3-treating temperature on visible light photocatalytic activity of N-doped P25-TiO2 . Sci. China Ser. B-Chem. 52, 1164–1170 (2009). https://doi.org/10.1007/s11426-009-0118-8

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  • DOI: https://doi.org/10.1007/s11426-009-0118-8

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