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Photocatalytic Decomposition of NH3 Over Fe-Doped TiO2 Prepared by Solid-State Impregnation

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Nanostructured Photocatalysts

Part of the book series: Nanostructure Science and Technology ((NST))

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Abstract

Pt/Fe-TiO2 photocatalysts which deposited Pt on Fe-doped TiO2 catalyzed the photodecomposition of NH3 aqueous solution to H2 and N2 under UV irradiation at room temperature. In addition, it was indicated that hydrogen formation by the photodecomposition of NH3 aqueous solution was caused under even visible light irradiation to Pt/Fe-TiO2 photocatalyst. Electron spin resonance spectroscopy showed that the dopant Fe species substituted a portion of the Ti4+ sites in the TiO2 crystal without changing TiO2 structure. From UV–visible diffuse reflectance measurements of Fe-doped TiO2, it was also indicated that the absorption edge of TiO2 was shifted from the ultraviolet to the visible light region by substitution with Fe. Hence, Fe-TiO2 photocatalyst seemed to allow for the effective utilization of irradiation light owing to the presence of a Fe impurity band, thereby leading to its higher activity.

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Authors and Affiliations

  1. Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan

    Yuichi Ichihashi, Atsushi Okemoto, Kazutaka Obata, Keita Taniya & Satoru Nishiyama

Authors
  1. Yuichi Ichihashi
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  2. Atsushi Okemoto
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  3. Kazutaka Obata
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  4. Keita Taniya
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  5. Satoru Nishiyama
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Correspondence to Yuichi Ichihashi .

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Editors and Affiliations

  1. Osaka University, Osaka, Osaka, Japan

    Hiromi Yamashita

  2. Department of Chemistry, Shanghai Normal University, Shanghai, China

    Hexing Li

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Ichihashi, Y., Okemoto, A., Obata, K., Taniya, K., Nishiyama, S. (2016). Photocatalytic Decomposition of NH3 Over Fe-Doped TiO2 Prepared by Solid-State Impregnation. In: Yamashita, H., Li, H. (eds) Nanostructured Photocatalysts. Nanostructure Science and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-26079-2_11

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