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《Journal of Materials Science and Engineering》 2004-04
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Preparation of Porous Nano-TiO_2 with High Activity and the Discussion of the Cooperation Photocatalysis Mechanism

ZHANG Ping 1, LIU Zu-wu 2, JIANG Yong 1 (1.Institute of Fundamental Mechanics & Material Engineering, Xiangtan University, Xiangtan 411105, China; 2.Department of Chemistry, Loudi normal college, Loudi 417000, China)  
The material of porous nano-TiO 2 was prepared with a new preparation method, which has very high photocatalytic activity. The degradation rate of the methyl orange solutions (50mg/L) which were decomposed by nano-TiO 2 in the irradiation of the center-pressure mercury lamp at 365nm only in 17 minutes was above 99.6% . After stopping irradiation, there is a degradation dark-reaction whose reaction rate was rapid at first and slow down then. The standpoint that in the anatase TiO 2 there was thimbleful rutile TiO 2 which could bring the cooperation photocatalysis of degradation and improve its photocatalytic activity was first put forward.
【Fund】: 国家自然科学基金资助项目 (1 0 372 0 87);; 湖南省科技厅资助项目 (0 1JZY1 0 0 3)
【CateGory Index】: TB383
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