Synergistic Decolouration of Azo Dye by Pulsed Streamer Discharge Immobilized TiO_2 Photocatalysis  

作　　者：李杰 王慧娟 李国锋 吴彦 仝燮 刘志刚 

机构地区：[1]Institute of Electrostatics and Special Power,Dalian University of Technology,Dalian 116024,China [2]School of Environmental and Biological Science and Technology,Dalian University of Technology,Dalian 116024,China

出　　处：《Plasma Science and Technology》2007年第4期469-473,共5页等离子体科学和技术（英文版）

基　　金：supported by the National Natural Science Foundation Committee of China(No.20377006);Foundation of Education Ministry of China(No.2005141002)

摘　　要：Photocatalyst was prepared by immobilizing TiO2 on glass beads using the traditional sol-gel method. Ultraviolet light （UV） produced by pulsed streamer discharge was then used to induce photocatalytic activity of TiO2 photocatalyst. Decolouration efficiency of the representative azo dye （acid orange 7, AOT） was investigated using the synergistic system of pulsed streamer discharge plasma and TiO2 photocatalysis. The obtained results showed that the decolouration rate of AO7 could be increased by 16.7% under the condition of adding supported TiO2 in the pulsed streamer discharge system, compared to that in the sole pulsed streamer discharge plasma system, due to the synergistic effect of pulsed streamer discharge and TiO2 photocatalysis induced by pulsed streamer discharge. The synergistic system of pulsed streamer discharge and TiO2 photocatalyst was found to have more reactive radicals for degradation of organic compounds in water.Photocatalyst was prepared by immobilizing TiO2 on glass beads using the traditional sol-gel method. Ultraviolet light （UV） produced by pulsed streamer discharge was then used to induce photocatalytic activity of TiO2 photocatalyst. Decolouration efficiency of the representative azo dye （acid orange 7, AOT） was investigated using the synergistic system of pulsed streamer discharge plasma and TiO2 photocatalysis. The obtained results showed that the decolouration rate of AO7 could be increased by 16.7% under the condition of adding supported TiO2 in the pulsed streamer discharge system, compared to that in the sole pulsed streamer discharge plasma system, due to the synergistic effect of pulsed streamer discharge and TiO2 photocatalysis induced by pulsed streamer discharge. The synergistic system of pulsed streamer discharge and TiO2 photocatalyst was found to have more reactive radicals for degradation of organic compounds in water.

关 键 词：pulsed streamer discharge immobilized TiO2 PHOTOCATALYSIS synergistic decolouration 

分 类 号：O461.25[理学—电子物理学]