期刊論文
| 學年 | 98 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2010-03-01 |
| 作品名稱 | Enhancing thermal stability and photocatalytic activity of anatase-TiO2 nanoparticles by co-doping P and Si elements.pdf |
| 作品名稱（其他語言） | |
| 著者 | Yu, Hsuan-Fu; Yang, Shih-Te |
| 單位 | 淡江大學化學工程與材料工程學系 |
| 出版者 | Amsterdam: Elsevier BV |
| 著錄名稱、卷期、頁數 | Journal of Alloys and Compounds 492(1-2), pp.695-700 |
| 摘要 | The Si/P–TiO2 nanoparticles, with a molar ratio [Si + P]/[Si/P–TiO2] = 0.03, were synthesized using a sol–gel method. The effects of relative ratios of dopants (i.e., R ≡ [P]/([Si + P]) and calcination temperatures on phase transformation, grain growth, and photocatalytic activity of the gel-derived Si/P–TiO2 were examined. While the Si–TiO2 (i.e., R = 0) had its anatase structure stabilize at 700 °C for 2 h, the Si/P–TiO2 (i.e., 0.33 ≤ R < 1) and P–TiO2 (i.e., R = 1) were able to preserve the anatase-TiO2 at temperature as high as 900 °C. Although at 900 °C the phosphorus elements in Si/P–TiO2 nanoparticles were partly excluded to the particles’ surface and tended to fuse the adjacent particles together, which may lead to a large reduction in their specific surface areas and photocatalytic activities, the Si/P–TiO2 with high silicon contents, such as the particles of R = 0.5 and 0.33, were still composed of loosely packed nanoparticles and showed good photocatalytic ability. In whole, the Si/P–TiO2 nanoparticles of R = 0.5 calcined at 600–900 °C gave the superior performance in photocatalytic activity, under both 365-nm UV light and white light irradiation. |
| 關鍵字 | Titanium dioxide; Sol–gel process; Nanoparticles; Photocatalysis; Structural transformation |
| 語言 | en |
| ISSN | 0925-8388 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | Yu, Hsuan-Fu |
| 審稿制度 | |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/60365 ) |