Prastomo, Niki and Daiko, Yusuke and Kogure, Toshihiro and Muto, Hiroyuki and Sakai, Mototsugu and Matsuda, Atsunori (2009) Formation mechanism of titania nanosheet cryatallites on silica–titania gel films by vibration hot-water treatment. Materials Science and Engineering B, 161 (1-3). pp. 170-174. ISSN 2161-6221
Full text not available from this repository.Abstract
The control of the nanostructures of the titania-based coatings further offers an exciting opportunity to enhance their unique physical and chemical properties. By immersing silica–titania gel film coatings in hot-water concurrently with applying a vibration, nanosheet crystallites of hydrated titania were precipitated at the surface of the gel films. The main objective of this study is to design the functionality of titania-based coatings through the control of their surface morphology and crystallinity at low processing temperatures. Two types of vibration treatments, i.e. perpendicular and parallel directions against the gel films, were used. On 87.5SiO2·12.5TiO2 composition, parallel vibration direction enhances the nanosheet structure formation to 180 nm thickness after 5 h, whereas the perpendicular vibration provides 150 nm thickness, which is about 18% lower than that of nanosheet structure formed by the parallel vibration. The attachment of the precipitates from dissolved titania species should be an important driving force for the formation of the sheet-like structure.
| Item Type: | Article |
|---|---|
| Keywords: | Sol–gel coating; Hot-water treatment; Titania; External field; Nanocrystal; Formation mechanism |
| Subjects: | 500 Science and Mathematic > 500 Science > 507 Education, Research, Related Topics |
| Divisions: | Faculty of Engineering & Informatics > Engineering Physics |
| Depositing User: | Administrator UMN Library |
| Date Deposited: | 09 Dec 2021 17:01 |
| Last Modified: | 09 Dec 2021 17:01 |
| URI: | https://kc.umn.ac.id/id/eprint/19445 |
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