https://scholars.lib.ntu.edu.tw/handle/123456789/444799
標題: | Synthesis of photocatalytic TiO<inf>2</inf> thin films via the high-pressure crystallization process at low temperatures | 作者: | Lu, C.-H. Wu, W.-H. Kale, R.B. CHUNG-HSIN LU |
關鍵字: | High-pressure crystallization; Photocatalytic activity; Thin films; Titanium dioxide | 公開日期: | 2007 | 卷: | 147 | 期: | 1-2 | 起(迄)頁: | 213-218 | 來源出版物: | Journal of Hazardous Materials | 摘要: | TiO2 thin films with a monophasic anatase structure were synthesized via a high-pressure crystallization (HPC) process which successfully lowered the crystallization temperature of TiO2 films from 350 to 150 °C. The thermal budget and energy consumption during the crystallization process were markedly reduced and dense films without cracks were obtained. During the HPC process, crystallization took place throughout the films and TiO2 films with uniform crystallinity were obtained. The HPC process also led to an enhancement in the wettability of TiO2 thin films. The hydrophilicity of the films increased with heating temperatures via high-pressure annealing. In comparison with the conventional annealing, the HPC process not only produced TiO2 films with superior photo-induced super-hydrophilicity, but also led to higher photocatalytic activity of the films. The HPC process was confirmed to provide a new route for synthesizing well-crystallized anatase TiO2 thin films with high photocatalytic activity and good wettability at low temperatures. © 2007 Elsevier B.V. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/444799 | DOI: | 10.1016/j.jhazmat.2006.12.068 | SDG/關鍵字: | Annealing; Crystallization; High pressure effects; Hydrophilicity; Synthesis (chemical); Titanium dioxide; High-pressure crystallization; Photocatalytic activity; Thermal budget; Thin films; titanium dioxide; titanium; titanium dioxide; Annealing; Crystallization; High pressure effects; Hydrophilicity; Synthesis (chemical); Thin films; Titanium dioxide; catalysis; crystallinity; crystallization; film; low temperature; titanium; article; catalyst; crystallization; density; energy consumption; film; heating; high pressure crystallization; high temperature; hydrophilicity; low temperature; photocatalysis; pressure; reaction analysis; synthesis; temperature sensitivity; wettability; cold; crystallization; photochemistry; temperature; Cold; Crystallization; Photochemistry; Pressure; Temperature; Titanium; Wettability |
顯示於: | 化學工程學系 |
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