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Photocatalytic Degradation of Methylene Blue by Hydrothermally Prepared Ag-Doped TiO2 Under Visible Light Irradiations

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Abstract

Nanosized silver (Ag)-doped TiO2 and undoped TiO2 are synthesized by a hydrothermal method. With the pure anatase phase, all samples showed good crystallinity and spherical morphology with uniform particle size distribution. Silver doping shifted the absorption edge of TiO2 toward a visible regime depicting the possible modification in the electronic band structure. X-ray photoelectron spectroscopy confirmed the existence of Ag in the doped sample. Compared with bare TiO2, Ag-doped TiO2 exhibits enhanced photocatalytic activity by the degradation of methylene blue under visible light illumination.

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Acknowledgements

This work was financially supported by the National High-Tech Research and Development Program (Grant 2012AA030302), National Natural Science Foundation of China (Grant 51072019), and the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (Grant SKL201112SIC).

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Authors and Affiliations

  1. Department of Inorganic Nonmetallic Materials, School of Materials Science and Engineering, University of Science and Technology Beijing (USTB), 30 Xueyuan Road, Haidian District, Beijing, 100083, People’s Republic of China

    Matiullah Khan & Wenbin Cao

  2. Department of Physics, Kohat University of Science and Technology (KUST), Kohat, 26000, Pakistan

    Matiullah Khan & Sahar Ramin Gul

  3. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China

    Jing Li

Authors
  1. Matiullah Khan
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  2. Sahar Ramin Gul
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  3. Jing Li
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  4. Wenbin Cao
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Correspondence to Matiullah Khan or Wenbin Cao.

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Khan, M., Gul, S.R., Li, J. et al. Photocatalytic Degradation of Methylene Blue by Hydrothermally Prepared Ag-Doped TiO2 Under Visible Light Irradiations. JOM 67, 2104–2107 (2015). https://doi.org/10.1007/s11837-015-1486-5

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  • DOI: https://doi.org/10.1007/s11837-015-1486-5

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