| Preparation, Characterization and Visible Light Photocatalytic Activity of Nitrogen-doped TiO2 |
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| 作者姓名： | WANG Zhengpeng GONG Wenqi HONG Xiaoting CAI Weimin JIANG Juhui ZHOU Baoxue |
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| 作者单位： | [1]School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240,China [2]School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | The N-doped TiO2 polycrystalline powder was synthesized through calcining the hydrolysis prodact of tetra-butyl titanate with ammonia. The photocatalytic activity of N-doped TiO2 powder with anatase phone calcined at 400℃ was 2.7 times higher than that of Degussa P25 for phenol decomposition under visible light. All samples had mesoporoas structures. X- ray photoelectron spectroscopy confirmed that a trace amount of N atoms remained in the anatase polycrystaUine TiO2 powder when calcined at 400 ℃ as substitutional atoms at the oxygen sites. UV-Vis and EPR analyses indicated that oxygen vacancy states were created during the course of N-doped TiO2 powder formation. It is considered that substitutional N atoms, oxygen vacancy, states, large BET surface areas and mesoporoas structure are important facwrs for the N-doped photocatalyst to present a high vis-activity.
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| 关 键 词： | 可见光 光接触反应 活度 氮掺杂TiO2 |
| 收稿时间： | 2005-01-19 |
| 修稿时间： | 2006-02-09 |
Preparation, characterization and visible light photocatalytic activity of nitrogen-doped TiO2 |
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| WANG Zhengpeng GONG Wenqi HONG Xiaoting CAI Weimin JIANG Juhui ZHOU Baoxue.Preparation, Characterization and Visible Light Photocatalytic Activity of Nitrogen-doped TiO2[J].Journal of Wuhan University of Technology. Materials Science Edition,2006,21(4):71-77. |
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| Authors: | Wang Zhengpeng Ph D Gong Wenqi Hong Xiaoting Cai Weimin Jiang Juhui Zhou Baoxue |
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| Affiliation: | (1) School of Environmental Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China;(2) School of Resources and Environmental Engineering, Wuhan University of Technology, 430070 Wuhan, China |
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| Abstract: | The N-doped TiO2 polycrystalline powder was synthesized through calcining the hydrolysis product of tetra-butyl titanate with ammonia. The
photocatalytic activity of N-doped TiO2 powder with anatase phase calcined at 400 °C was 2.7 times higher than that of Degussa P25 for phenol decomposition under
visible light. All samples had mesoporous structures. X-ray photoelectron spectroscopy confirmed that a trace amount of N
atoms remained in the anatase polycrystalline TiO2 powder when calcined at 400 °C as substitutional atoms at the oxygen sites. UV-Vis and EPR analyses indicated that oxygen
vacancy states were created during the course of N-doped TiO2 powder formation. It is considered that substitutional N atoms, oxygen vacancy states, large BET surface areas and mesoporous
structure are important factors for the N-doped photocatalyst to present a high vis-activity.
Funded by National “973” Plan Research Project (No. 2004CB619204) and Educational Ministry Scientific and Technological Research
Key Project(No.02052) |
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| Keywords: | photocatalyst visible Light nitrogen-doped TiO2 phenol |
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