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氮摻雜二氧化鈦薄膜的制備與光催化性能
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清華大學(xué)基礎(chǔ)研究基金（JCq2005045）；凝固技術(shù)國家重點(diǎn)實(shí)驗(yàn)室開放課題


Preparation and Photocatalysis Property of N-Doped TiO2 Film
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    摘要:

    采用溶膠-凝膠法制備了氮摻雜改性的TiO2薄膜，用表面形貌儀、掃描電鏡和光電子能譜儀等分析薄膜的厚度、表面形貌和成分，研究了薄膜對亞甲基藍(lán)的光催化降解速率。結(jié)果表明，通過加入尿素實(shí)現(xiàn)了氮離子在TiO2晶格間的間隙摻雜和替位摻雜。薄膜厚度在50~200 nm之間，表面平整。氮離子摻雜使TiO2薄膜的光催化活性大大提高，當(dāng)?shù)獡诫sTiO2薄膜中N/Ti原子比為0.015時(shí)，單層氮摻雜TiO2薄膜降解亞甲基藍(lán)一半所需要的時(shí)間為2.5 h。

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    Nitrogen-doped modified TiO2 films were prepared through sol-gel method. The thickness, surface microstructure and composition were analyzed by nano indenter, scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of N-doped TiO2 films was researched through the degradation experiment of methylene blue under UV light. Results showed that nitrogen ions are doped into TiO2 films by adding urea and they are between TiO2 crystal lattices and mainly in interstitial configuration and substitution configuration. The films are very flat with the thickness of between 50-200 nm. Nitrogen ions doping improves the photocatalytic activity of TiO2 films. When N/Ti=0.015 (atom ratio) in TiO2 films, it takes single N-doped TiO2 film 2.5 h to decompose the methylene blue solution.

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趙宏生,胡紅坡,張凱紅,李自強(qiáng).氮摻雜二氧化鈦薄膜的制備與光催化性能[J].稀有金屬材料與工程,2009,38(10):1815~1817.[Zhao Hongsheng, Hu Hongpo, Zhang Kaihong, Li Ziqiang. Preparation and Photocatalysis Property of N-Doped TiO2 Film[J]. Rare Metal Materials and Engineering,2009,38(10):1815~1817.]
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  • 收稿日期:2008-09-26
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