A facile strategy to prepare Fe3+ modified brookite TiO2 with high photocatalytic activity under ultraviolet light and visible light

A facile strategy to prepare Fe3+ modified brookite TiO2 with high photocatalytic activity under... 3? Keywords Brookite titanium dioxide  Fe  Modified  Photocatatlytic Introduction TiO semiconductor material is a popular photocatalyst due to its nontoxic, stable and low-cost properties [1–5]. However, it has a wide band-gap of 3.2 eV, indicating that it only can absorb ultraviolet light energy (ca. 4 % of the solar spectrum) [6–9]. Recently, numerous efforts have been devoted to improve the visible light photocatalytic activity of TiO by doping with various elements [10–17]. This strategy could introduce structural defects into TiO , and shift the absorption edge from the ultraviolet light region to the visible light region, which can effectively enhance the visible light photocatalytic activity. It is noteworthy, that doped with transition metal ions could narrow the TiO band gap, and induce a red shift of the TiO absorption spectrum. However, the introduced doping energy level will easily generate recombination centers, which could reduce the ultraviolet photocatalytic activity, especially metal ions doping. 3? In comparison with other transition metal ions, Fe has a special semi-full 4? 3? electronic structure, and its ion radius is closed to Ti , thus Fe is an ideal dopant 3? of TiO [18, 19]. There have been much work reported about http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

A facile strategy to prepare Fe3+ modified brookite TiO2 with high photocatalytic activity under ultraviolet light and visible light

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Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2746-x
Publisher site
See Article on Publisher Site

Abstract

3? Keywords Brookite titanium dioxide  Fe  Modified  Photocatatlytic Introduction TiO semiconductor material is a popular photocatalyst due to its nontoxic, stable and low-cost properties [1–5]. However, it has a wide band-gap of 3.2 eV, indicating that it only can absorb ultraviolet light energy (ca. 4 % of the solar spectrum) [6–9]. Recently, numerous efforts have been devoted to improve the visible light photocatalytic activity of TiO by doping with various elements [10–17]. This strategy could introduce structural defects into TiO , and shift the absorption edge from the ultraviolet light region to the visible light region, which can effectively enhance the visible light photocatalytic activity. It is noteworthy, that doped with transition metal ions could narrow the TiO band gap, and induce a red shift of the TiO absorption spectrum. However, the introduced doping energy level will easily generate recombination centers, which could reduce the ultraviolet photocatalytic activity, especially metal ions doping. 3? In comparison with other transition metal ions, Fe has a special semi-full 4? 3? electronic structure, and its ion radius is closed to Ti , thus Fe is an ideal dopant 3? of TiO [18, 19]. There have been much work reported about

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Sep 26, 2016

References

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