کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1484584 | 991637 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and characterization of visible light responsive N–TiO2 mixed crystal by a modified hydrothermal process Synthesis and characterization of visible light responsive N–TiO2 mixed crystal by a modified hydrothermal process](/preview/png/1484584.png)
N doped TiO2 with anatase and rutile mixed crystal were prepared by using tetrabutyl titanate as the precursor via a modified hydrothermal process and calcination at 320 °C. The microstructure and morphology of samples were characterized by XRD, UV–vis-DRS, FTIR and XPS. The results showed that N–TiO2 particles were crystallized to anatase and rutile mixed crystal structure; they were presented narrow particle size distribution, and the average particle size was ca. 13.5 nm calculated from XRD results. It was found that the N-doped TiO2 particles showed strong visible-light absorption and high photocatalytic activity for the mineralization of Rhodamine B under irradiation by visible light (400–500 nm). The high visible-light photocatalytic activity of the obtained N-doped TiO2 might result from the synergetic effect of nitrogen doping and the mixed lattice structure of N–TiO2. Possible mechanism of N–TiO2 mixed crystal formed under hydrothermal conditions was discussed.
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 33, 1 September 2008, Pages 3965–3972