Nano-TiO2-coated unidirectional porous glass structure prepared by freeze drying and solution infiltration
authors Deng, ZY; Fernandes, HR; Ventura, JM; Kannan, S; Ferreira, JMF
nationality International
journal JOURNAL OF THE AMERICAN CERAMIC SOCIETY
keywords REINFORCING MECHANISMS; THIN-FILMS; CERAMICS; DECOMPOSITION; OXIDATION; COATINGS
abstract A unidirectional porous glass structure coated with a nanometer TiO2 thin film on pore walls was successfully fabricated by a two-step process. Firstly, a water-based slurry of sheet glass was frozen while controlling the growth direction of ice crystals, and then sublimation of the ice under vacuum formed the green body. The green body was subsequently sintered to produce porous glass with unidirectional pores. Secondly, the sintered porous glass was infiltrated by a titanium (IV) butoxide solution, and then dried and calcined at a moderate temperature to generate a nanometer TiO2 film on pore walls. The present porous glass with nanometer TiO2 has more total surface area than the TiO2 film on glass plates, which is believed to be more effective in the phtotocatalysis application for air or water purification.
publisher BLACKWELL PUBLISHING
issn 0002-7820
year published 2007
volume 90
issue 4
beginning page 1265
ending page 1268
digital object identifier (doi) 10.1111/j.1551-2916.2007.01602.x
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000245675300040
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journal analysis (jcr 2019):
journal impact factor 3.502
5 year journal impact factor 3.475
category normalized journal impact factor percentile 91.071
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