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Citation: YU Yang-Yang, YU Mei-Yan, ZHANG Yue, SUN Wei-Wei, LIU Ying. Preparation and Mechanism of N-Doped TiO₂ Powders[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(8): 1657-1662. doi: 10.3969/j.issn.1001-4861.2013.00.284 shu

Preparation and Mechanism of N-Doped TiO₂ Powders

1.
Institute of Material Science and Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 26 December 2012
Available Online: 6 May 2013
Fund Project: 国家自然科学基金(No.51072188,No.21203171)资助项目。 (No.51072188,No.21203171)

N-doped TiO₂ powers have been prepared using tetrabutyl titanate and urea. The properties of phase/size/absorbance were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis absorption spectroscopy. The results indicate that particle size of N-doped TiO₂ decreased and the absorption effect increased greatly. In order to prove the experimental results, we studied the doping mechanism using DFT. The band gap has been decreased effectively because of doping. Compared with substitutional N-doped TiO₂, interstitial N-doped TiO₂ is more beneficial to the light absorption.
- N-doped;DFT;substitutional N;interstitial N
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation and Mechanism of N-Doped TiO₂ Powders