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Chemcial Industry and Engineering 2009, Vol. 26 Issue (4) :311-315    DOI:
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Photocatalytic Properties of TiO_2 Thin Films Doped with Various Metal Ions
LUO Lei,LI Zhi-guang,LI Qiong,TU Fei-yue(College of Science,Hunan Agricultural University,Changsha 410128,Hunan Province,China)
(College of Science,Hunan Agricultural University,Changsha 410128,Hunan Province,China

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Abstract Nanosized TiO_2 thin films doped respectively with Fe 3+,Cu 2+,Zn 2+,Ce 3+,La 3+ were prepared by sol-gel method and characterized by XRD.The prepared film was used in the photocatalytic experiment of methylene blue.The experimental results showed that the film doped with La 3+ was the best of the five doping ions.When the content of La 3+ doped was 1.8%(mass ratio),no much difference was observed in XRD between La 3+ doped TiO_2 and non-doped TiO_2.The particle diameter of TiO_2 decreased by the doping of La 3+ and the crystal was restrained to become rutile structure.The particle of TiO_2 increased with the increase of calcination temperture.The particle diameter was 27.6 nm at 700 �� and the crystal was mixed crystal with highest catalytic activity.
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Received 2009-07-15; published 2009-07-15
Cite this article:   
LUO Lei,LI Zhi-guang,LI Qiong,TU Fei-yue.Photocatalytic Properties of TiO_2 Thin Films Doped with Various Metal Ions[J]  Chemcial Industry and Engineering, 2009,V26(4): 311-315
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