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简单有效掺氮氧化钛纳米晶的制备及其可见光催化性能

杨松旺; 高濂   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050
  • 收稿日期:2004-06-23 修回日期:2004-07-20 出版日期:2005-07-20 网络出版日期:2005-07-20

Simple and Effective Preparation of N-doped TiO2 Nanocrystallites with Visible-light Activities

YANG Song-Wang; GAO Lian   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 20050; China

  • Received:2004-06-23 Revised:2004-07-20 Published:2005-07-20 Online:2005-07-20

摘要: 以钛酸丁酯为钛源,与尿素混合制成含氮前驱体,在空气中一定温度和时间退火处理制备氮掺杂的氧化钛纳米晶.用XRD、XPS和UV—Vis吸收光谱等手段对制备的掺氮氧化钛进行了表征,并对其可见光照射下的光催化性能进行了测试.结果表明,该方法掺杂的氧化钛纳米晶的吸收带边明显移到可见光区,其在降解亚甲基蓝的实验中表现出良好的可见光催化活性.

关键词: 氮掺杂, 氧化钛, 纳米晶, 光催化, 可见光

Abstract: N-doped Ti02 nanocrystallites were prepared by mixing tetrabutyl titanate and urea in ethanol, then calcined at a certain temperature and time. The prepared powders were characterized by XRD, XPS and UV-Vis absorbance spectra and their photocatalytic activities under visible-light irradiation were also investigated. N-doped TiO2 prepared by this method could make its absorbance shoulder evidently shift into visible-light region. Also it has high photocatalytic activities in the degradation of methylene blue under visible-light irradiation.

Key words: N-doped, TiO2, nanocrystallite, photocatalysis, visible-light

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