�ɼ��Ӧ��Fe~(3+)��TiO_2��߻��⵪��о�

ժҪ Ϊ��ڹ�߻�ת��ķ�Ӧ��ÿɼ��,��Fe(NO3).9H2O��ΪFe3+Դ,��ý��յķ��,�Ʊ��Fe3+��ε��TiO2��XRD��,��Ӻ��չ��û�иı�TiO2�ľ��͡��XRD��XPSͼ�׿�֪,Fe3+��TiO2��γ�Ti��O��Fe��߻��UV-Vis��ʾ,Fe3+��TiO2�߻��չ��׷��һ��̶ȵĺ��,�ڿɼ��һ��ա�Fe3+��TiO2�߻��¶�NOx��һ��ת��ģ��Ȼ��NOx��ת��Ч��Ҳ��ߡ��ʵ�Fe3+��ι��̷ǳ��Ҫ,Fe3+/Ti4+Ħ��Ϊ0.2%��600��1.0 h�Ĵ߻��ڿɼ��ת��NOx�Ļ��ߡ�

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�ؼ���� ߻� Fe��TiO2 �ɼ��

Abstract�� In order to utilize visible light in photocatalytic conversion of NO_x, Fe atoms were doped in commercially available photocatalytic TiO_2 powders by impregnating method.The crystal phase of TiO_2 was not changed after calcinations process.Analysis by both X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) indicated that Fe atoms were incorporated in TiO_2 as Ti��O��Fe linkages.A significant shift of the absorption edge to a lower energy and a higher absorption in the visible light region were observed.These Fe-doped TiO_2 powders exhibited photocatalytic activity for the degradation of NO_x under visible light irradiation.The sample mixed with 0.2% Fe~(3+) and calcined at 600 �� for 1.0 h showed the best photocatalytic activity.

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Received 2008-09-15; published 2008-09-15

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��;̷��;��;��ʿ��;.�ɼ��Ӧ��Fe~(3+)��TiO_2��߻��⵪��о�[J]. ��ѧ��ҵ�빤��, 2008,25(5): 399-403

ZHOU Lin~.Photocatalytic Degradation of NO_x Under Visible Light Irradiation Using Fe Doped Titanium Dioxide[J]. Chemcial Industry and Engineering, 2008,25(5): 399-403

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