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| N 掺杂TiO2光催化剂的制备及其可见光活性研究 | |
| 引用本文： | 唐玉朝,黄显怀,俞汉青,胡春.N 掺杂TiO2光催化剂的制备及其可见光活性研究[J].无机化学学报,2005,21(11):1747-1751. |
| 作者姓名： | 唐玉朝 黄显怀 俞汉青 胡春 |
| 作者单位： | 1. 安徽建筑工业学院环境工程系,合肥,230022;中国科学技术大学化学与材料科学学院,合肥,230026 2. 安徽建筑工业学院环境工程系,合肥,230022 3. 中国科学技术大学化学与材料科学学院,合肥,230026 4. 中国科学院生态环境研究中心,北京,100085 |
| 基金项目： | 国家自然科学基金资助项目(No.50478065)，安徽省高等学校青年教师项目(No.2004jq138)资助，安徽省优秀青年科技基金项目(No.04044077)。 |
| 摘 要： | A visible-light-active photocatalyst was prepared by calcination of the hydrolysis product of tetrabutyl titanate with ammonia as precipitant. The photocatalyst was characterized by X-ray diffraction (XRD), UV-Vis diffuse reflection spectra (DRS), thermal gravimetric-differential thermal analysis (TG-DTA), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM). The color of the photocatalyst was yellow and could absorb light wavelength under 550 nm as measured by DRS. The catalyst calcined at higher temperature will give lower absorbance for visible light. Structures of the sample were characterized mainly to be anatase by XRD except for the sample calcined at 700 ℃ which gave mixtures of anatase and rutile. TG-DTA results showed that temperature for anatase formation was 415 ℃. XPS results showed that doped-nitrogen was presented in the sample, they are important to show visible-light absorbency. The photocatalytic activities were evaluated using methyl orange and phenol as model pollutants, the results showed that over 90% of phenol could be degraded under visible light using N/TiO2 as the catalyst after 4 hours reaction. Almost the same activity was found for the TiO2 photocatalyst calcined at different temperature under sunlight but activities were different when the treatment was under UV light. |
| 关 键 词： | 光催化 TiO2 N掺杂 可见光活性 |
| 文章编号： | 1001-4861(2005)11-1747-05 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-06-28 |
Characterization and Visible-Light-Activity of Nitrogen-doped TiO2 Photocatalyst |
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| TANG Yu-Chao,HUANG Xian-Huai,YU Han-Qing and HU Chun.Characterization and Visible-Light-Activity of Nitrogen-doped TiO2 Photocatalyst[J].Chinese Journal of Inorganic Chemistry,2005,21(11):1747-1751. | |
| Authors: | TANG Yu-Chao HUANG Xian-Huai YU Han-Qing and HU Chun |
| Institution: | Department of Environmental Engineering, Anhui Institute of Architecture and Industry, Hefei 230022;School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026,Department of Environmental Engineering, Anhui Institute of Architecture and Industry, Hefei 230022,School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026 and Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
| Abstract: | |
| Keywords: | photocatalysis TiO2 nitrogen-doped visible-light-activity |
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