紫外光照射下 Fe-碳纳米管/TiO2 复合材料降解罗丹明 B

催化学报 ›› 2010, Vol. 31 ›› Issue (7): 751-758.

紫外光照射下 Fe-碳纳米管/TiO2 复合材料降解罗丹明 B

ZHANG Kan, MENG Zeda, OH Wonchun*

Department of Advanced Materials and Science Engineering, Hanseo University, Chungnam 356-706, Korea

收稿日期:2010-07-25 出版日期:2010-07-25 发布日期:2010-07-25

Degradation of Rhodamine B by Fe-Carbon Nanotubes/TiO2 Composites under UV Light in Aerated Solution

ZHANG Kan, MENG Zeda, OH Wonchun*

Department of Advanced Materials and Science Engineering, Hanseo University, Chungnam 356-706, Korea

Received:2010-07-25 Online:2010-07-25 Published:2010-07-25

摘要/Abstract

摘要： The composites comprising Fe-carbon nanotubes (CNTs) on TiO2 were prepared by a modified sol-gel method and characterized by nitrogen adsorption, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and energy dispersive X-ray analysis. The photocatalytic decomposition of rhodamine B (Rh.B) under UV irradiation and air aeration catalyzed by the composites was measured. The photocatalytic activity of TiO2 nanoparticles was significantly enhanced by the large CNT network that facilitated electron transfer between adsorbed Rh.B molecules and the catalyst substrate and the simultaneous occurrence of the photo-Fenton reaction in the presence of Fe particles. A marked acceleration of the decomposition rate was observed with aeration by flowing air aeration due to the formation of the circulatory photo-Fenton system. Chemical oxygen demand of piggery waste was measured at regular intervals to evaluate the mineralization of wastewater.

关键词: iron, carbon nanotube, titania, rhodamine B, photocatalytic activity, photo-Fenton

Abstract: The composites comprising Fe-carbon nanotubes (CNTs) on TiO2 were prepared by a modified sol-gel method and characterized by nitrogen adsorption, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and energy dispersive X-ray analysis. The photocatalytic decomposition of rhodamine B (Rh.B) under UV irradiation and air aeration catalyzed by the composites was measured. The photocatalytic activity of TiO2 nanoparticles was significantly enhanced by the large CNT network that facilitated electron transfer between adsorbed Rh.B molecules and the catalyst substrate and the simultaneous occurrence of the photo-Fenton reaction in the presence of Fe particles. A marked acceleration of the decomposition rate was observed with aeration by flowing air aeration due to the formation of the circulatory photo-Fenton system. Chemical oxygen demand of piggery waste was measured at regular intervals to evaluate the mineralization of wastewater.

Key words: iron, carbon nanotube, titania, rhodamine B, photocatalytic activity, photo-Fenton

ZHANG Kan;MENG Zeda;OH Wonchun*. 紫外光照射下 Fe-碳纳米管/TiO2 复合材料降解罗丹明 B[J]. 催化学报, 2010, 31(7): 751-758.

ZHANG Kan;MENG Zeda;OH Wonchun*. Degradation of Rhodamine B by Fe-Carbon Nanotubes/TiO2 Composites under UV Light in Aerated Solution[J]. Chinese Journal of Catalysis, 2010, 31(7): 751-758.

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