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The Influence of Fe3+ Doping on the Crystallization of TiO2 and their Photocatalytic Activity

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Abstract:

TiO2 photocatalysts doped by Fe3+ with different contents were prepared by adsorption phase synthesis. The influence of Fe3+ doping with various concentrations on the crystallization of TiO2 was explored by XRD. Then photodegradation experiments of methyl-orange were employed to evaluate the activity of these photocatalysts. The results indicated that the crystallization of TiO2 was restricted after doping, due to replacement of Ti4+ in TiO2 lattice structure by Fe3+ ions. And the restriction became stronger with doping concentration of Fe3+ ions increasing. Since radius of Fe3+ was close to Ti4+, the restriction of Fe3+ doping on crystallization of TiO2 was so stronger that the photocatalytic activity of most TiO2 doped with Fe3+ ions was lower than that of TiO2 without doping.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

2360-2363

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.2360

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Online since:

August 2013

Authors:

Ting Wang*, Kang Lie Yin, Hai Feng Yang, Qi Hui Tian, Li Guang Wu, Yan Fei Tang

Keywords:

Adsorption Phase Synthesis, Fe3+ doping, Methyl-Orange, Photodegradation, TiO2

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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