Enhancing thermal stability and photocatalytic activity of anatase-TiO2 nanoparticles by co-doping P and Si elements.pdf
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
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