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《Journal of University of Science and Technology Beijing》 2008-11
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Oxidative power of N/TiO_2 photocatalysis under visible illumination

TANG Jianjun1),ZOU Yuan1),ZHANG Wei1),XIE Weiping1),ZHOU Kanggen2)1) School of Construction and Environmental Engineering,Shenzhen Polytechnic,Shenzhen 518055,China 2) School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China  
N-doped TiO2 photocatalyst was prepared by calcination of hydrated titanium dioxide in ambient atmosphere at 600 ℃ for 2 h,which was obtained by using saturated urea solutions as precipitant.The photocatalytic properties of the obtained yellow samples were studied using reactive brilliant red X-3B,2,4-dichlorophenol and CH3COO- as model pollutants.XPS results indicated that nitrogen was doped into TiO2 lattice in the form of Ti-N chemical bond.UV-Vis results showed that the sample could absorb the visible light wavelength above 400 nm.Photocatalytic results revealed that X-3B and 2,4-dichlorophenol could be degraded by N/TiO2 photocatalysis when using a fluorescent lamp of 420 nm in main wavelength as the light source,while CH3COO- could not be degraded,however,CH3COO- could be degraded by N/TiO2 photocatalysis under UV irradiation.The wavelength of excitation illumination has great influence on the oxidative power of N/TiO2 photocatalysis.
【Fund】: 深圳市科技计划资助项目(No.05kjd051)
【CateGory Index】: O643.3
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