Photocatalytic Degradation of Nitrogen Oxides Using N-Decorated TiO

化学工业与工程

Chemcial Industry and Engineering

2008, Vol. 25

Issue (2) :98-103 DOI:

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Photocatalytic Degradation of Nitrogen Oxides Using N-Decorated TiO_2 Under Visible Light Irradiation

LIU Shi-xin~1,ZHAO Lin~1,TAN Xin~1,ZHANG Rui~2(1.School of Chemical Engineering and Technology,Tianjin 300072,China;2.School of Environmental Science and Technology,Tianjin 300072,China)

(1.School of Chemical Engineering and Technology,Tianjin 300072,China;2.School of Environmental Science and Technology,Tianjin 300072,China

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Abstract In order to utilize visible light in photocatalytic conversion of NO_2,nitrogen atoms were doped in commercially available photocatalytic TiO_2 powders using ammonium carbonate as N source by immpregnating method.The crystal structures of TiO_2 was not changed after calcinations process.Analysis by X-ray photoelectron spectroscopy(XPS) indicated that N atoms were incorporated in the bulk phase of TiO_2 as(N-Ti-O) linkages.A significant shift of the absorption edge to a lower energy and a higher absorption in the visible light region were observed.These N-decorated TiO_2 powders exhibited photocatalytic activity for the degradation of NO_2 under visible light irradiation.The sample mixed with 20% ammonium carbonate and calcined at 600 ℃ for 1.0 h showed best photocatalytic activity.

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Received 2008-03-15; published 2008-03-15

Cite this article:

LIU Shi-xin~1,ZHAO Lin~1,TAN Xin~1,ZHANG Rui~2.Photocatalytic Degradation of Nitrogen Oxides Using N-Decorated TiO_2 Under Visible Light Irradiation[J] Chemcial Industry and Engineering, 2008,V25(2): 98-103

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