• 责任者：Liao Libing（School of Materials Science and Technology ; China University of Geosciences ; Beijing 100083 ; China） ; Yang Qiuping
• 刊名：Acta Mineralogica Sinica
• 出版年：2008
• 卷期：28(3)
• 关键词：纳米材料 ; nano materials ; 氮 ; nitrogen
• 页码：p.231-236
• 图表：3 illus., 2 tables, 8 refs.
• 分类号：0700
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

N-doped nano-TiO₂ was obtained by calcining in N₂ the precursors prepared by the sol-gel method. The N-doped nano-TiO₂ was characterized by XRD, XPS, TEM and ultraviolet-visible light spectrometry. The influence of environment atmosphere, calcining temperature and duration on the crystal phase, average crystal diameter, adsorption wave length, contents of surface O, N of N-doped nano-TiO₂ were studied and compared with that of TiO₂ prepared by the same method and under same conditions but calcined in the air. Results showed that N-doped nano-TiO₂ has a higher phase transition temperature, higher contents of surface O, higher contents of interstitial N, smaller average crystal size and longer adsorption wave length, which is 435 nm for the sample calcined in N₂ for 4 hours at 550 ℃.