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Controlled Formation of Highly Ordered Cubic and Hexagonal Mesoporous Nanocrystalline Yttria–Zirconia and Ceria–Zirconia Thin Films Exhibiting High Thermal Stability
Author(s) -
Crepaldi Eduardo L.,
de A. A. SolerIllia Galo J.,
Bouchara Anne,
Grosso David,
Durand Dominique,
Sanchez Clément
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200390113
Subject(s) - cubic zirconia , yttria stabilized zirconia , nanocrystalline material , mesoporous material , materials science , hexagonal crystal system , thin film , chemical engineering , thermal stability , nanotechnology , crystallography , composite material , catalysis , chemistry , ceramic , organic chemistry , engineering
Yttria–zirconia and ceria–zirconia mesoporous thin films adopt either a cubic or 2D hexagonal mesostructure (see picture) depending on the quantity of water employed during the post‐processing of the films. The hexagonal films are thermally stable above 400 °C, while the cubic forms retain their integrity up to 700 °C; both forms continue to be porous at temperatures as high as 800 °C. Such robust and easily prepared crystalline materials may have many useful applications, for example, in the design of sensors, electrode materials, and catalysts.