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Surfactants Effect on the Photoactivity of Fe-Doped TiO2

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Abstract:

Ti (OC4H9)4 was used as the Ti precursor and titanium dioxide (TiO2) was prepared by sol-gel method. During the preparation process, Fe3+ was doped and different surfactants, such as SDS, PEG, CTAB, were added to improve the photocatalytic activity of TiO2. The effect of the different type of surfactants on the structure of Fe-doped TiO2 was discussed. The photocatalysts were characterized by thermogravimetric thermal analysis, X-ray diffraction, scanning electron microscopy and UV-Vis spectrophotometer. The red shift of the absorption edge of the Fe-doped TiO2 prepared by using different surfactants was observed. Methyl orange (MO) solution was degraded under sunlight irradiation to evaluate the photocatalytic performance. The results indicated that the photocatalyst prepared with PEG addition had the highest activity and MO degradation ratio could reach 90% after 4 hours irradiation with the best photocatalyst.

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Periodical:

Materials Science Forum (Volumes 743-744)

Pages:

367-371

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.743-744.367

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Online since:

January 2013

Authors:

Qing Yun Chen, Chao Xue, Xiang Lin Li, Yun Hai Wang

Keywords:

Iron-Doped Titania, Photocatalytic Activity, Sol-Gel (SG), Surfactant

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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