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ժҪ ��ܽ�-��ֱ��Ʊ��˲��Fe3+��Cu2+��Zn2+��Ce3+��La3+5�ֲ�ͬ��ӵ��׼�TiO2��Ĥ,ʹ��TiO2��Ĥ��Ǽ׻��Һ��й�߻��顣�о��,��5�ֲ��,��La3+�Ĳ��Ч��,��La3+��˺��Ϊ1.8%(��)ʱ,��δ��ӵ�XRDͼ�׻��һ��;��La3+��ʹ��TiO2�ľ��С,��ƾ��ʯ��ת��;��ű��¶ȵ��TiO2��𽥱��,�¶�Ϊ700��ʱ,��Ϊ27.6nm,TiO2Ϊ��Ͼ��(��ѿ��ͺͽ��ʯ��),��ߡ�

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�ؼ���� TiO2��Ĥ ��߻�

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

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��;��־��;��;Ϳ��Ծ;.��ͬ��Ӳ��TiO_2��Ĥ��߻��о�[J]. ��ѧ��ҵ�빤��, 2009,26(4): 311-315

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, 2009,26(4): 311-315

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