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Erschienen in:

2016 | OriginalPaper | Buchkapitel

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

verfasst von : Yuichi Ichihashi, Atsushi Okemoto, Kazutaka Obata, Keita Taniya, Satoru Nishiyama

Erschienen in: Nanostructured Photocatalysts

Verlag: Springer International Publishing

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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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Titel: Photocatalytic Decomposition of NH3 Over Fe-Doped TiO2 Prepared by Solid-State Impregnation
verfasst von: Yuichi Ichihashi
Atsushi Okemoto
Kazutaka Obata
Keita Taniya
Satoru Nishiyama
Verlag: Springer International Publishing
Buch: Nanostructured Photocatalysts
Print ISBN: 978-3-319-26077-8

Electronic ISBN: 978-3-319-26079-2

Copyright-Jahr: 2016
DOI: https://doi.org/10.1007/978-3-319-26079-2_11

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