Microstructural evolution of a TiO2 mesoporous single layer film under calcination: Effect of stabilization and repeated thermal treatments on the film crystallization and surface area
[en] This study quantifies the highest perturbation encountered by the first layer of a TiO2 12 layers-mesoporous coating, which is submitted to a multistep calcination process. Besides, we propose an alternative thermal treatment in order to limit the degradation induced by repeated calcinations. This paper reports and compares the modifications in film thickness, surface area, anatase crystallite size and global crystallinity of films obtained from different thermal treatments. It defines the maximum crystal size compatible with the preservation of the mesoarchitecture initially induced by templating. Differences in microporosity and rate of crystallization are also discussed.
Disciplines :
Chemistry
Author, co-author :
Dewalque, Jennifer ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Dubreuil, Olivier
Krins, Natacha ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Vertruyen, Bénédicte ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Henrist, Catherine ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Language :
English
Title :
Microstructural evolution of a TiO2 mesoporous single layer film under calcination: Effect of stabilization and repeated thermal treatments on the film crystallization and surface area
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