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Vacuum activation-induced Ti3+ and carbon co-doped TiO2 with enhanced solar light photo-catalytic activity

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Abstract

Ti3+ and carbon co-doped TiO2 photocatalysts were prepared hydrothermally to introduce the carbon, and followed by simple vacuum activation to achieve the Ti3+ self-doping. The prepared co-doped photocatalysts were characterized by XRD, TEM, UV–Vis absorption spectra, EPR, and XPS. It was found that the co-doped TiO2 has dispersed nanoparticles and a narrower band-gap compared with the un-doped TiO2 and single-doped TiO2. The experimental results displayed that the coke carbon generated on the surface of co-doped TiO2 acts as a photosensitizer and has the photosensitization effect under solar light irradiation. Except for the carbon sensitization effect, the Ti3+ self-doping modification has a synergistic effect which is the reason for the effective photo-degradation of methyl orange under simulated solar light irradiation.

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Acknowledgments

This work was supported by the National Nature Science Foundation of China (21203062, 21377038, 21173077, 21237003), the Research Fund for the Doctoral Program of Higher Education (20120074130001), the Fundamental Research Funds for the Central Universities (22A201514021), and sponsored by the “Chenguang Program” supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission (14CG30).

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Authors and Affiliations

  1. Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People’s Republic of China

    Qiuying Yi, Yi Zhou, Mingyang Xing & Jinlong Zhang

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  1. Qiuying Yi
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  2. Yi Zhou
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  3. Mingyang Xing
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  4. Jinlong Zhang
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Correspondence to Mingyang Xing or Jinlong Zhang.

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Yi, Q., Zhou, Y., Xing, M. et al. Vacuum activation-induced Ti3+ and carbon co-doped TiO2 with enhanced solar light photo-catalytic activity. Res Chem Intermed 42, 4181–4189 (2016). https://doi.org/10.1007/s11164-015-2268-y

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