Article (Scientific journals)
Aqueous sol-gel synthesis and film deposition methods for the large-scale manufacture of coated steel with self-cleaning properties
Mahy, Julien; Léonard, Géraldine; Pirard, Sophie et al.
2017In Journal of Sol-Gel Science and Technology, 81 (1), p. 27-35
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Keywords :
TiO2 aqueous synthesis; self-cleaning steel; scaling up; photocatalysis; hydrophilicity
Abstract :
[en] A process has been developed to enable the large scale production of pure TiO2 films deposited on 316L stainless steel in order to get an easy-to-clean surface. This large scale process requires an easy aqueous sol-gel procedure for the synthesis of the TiO2 sol. This synthesis has been simplified to facilitate the extrapolation towards an industrial scale. Results of TEM, photocatalytic properties, film hydrophilicity, and texture obtained with the simplified aqueous sol-gel synthesis (IsoP-TiO2 synthesis) show similar properties to those obtained with the standard aqueous sol-gel synthesis of TiO2 (HAc-TiO2 synthesis) developed previously. Only X-Ray Diffraction patterns showed differences, with the presence of anatase-brookite phases in IsoP-TiO2 synthesis while anatase phase only was observed in HAc-TiO2 synthesis. Both the aqueous sol-gel synthesis of pure TiO2 and the film deposition on steel by roll-coating have been successfully extrapolated to a larger scale. The photocatalytic activity and the hydrophilicity of the film were found to be unchanged when compared to films produced at a laboratory scale, thus validating the production of an efficient easy-to-clean material. Although some problems are still to be solved, this study is a hopeful first step in the development of a large scale process for self-cleaning steel production.
Disciplines :
Chemical engineering
Materials science & engineering
Author, co-author :
Mahy, Julien  ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable
Léonard, Géraldine ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Pirard, Sophie ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Wicky, David
Daniel, Alain
Archambeau, Catherine
Liquet, Dimitri ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Heinrichs, Benoît ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Language :
English
Title :
Aqueous sol-gel synthesis and film deposition methods for the large-scale manufacture of coated steel with self-cleaning properties
Publication date :
2017
Journal title :
Journal of Sol-Gel Science and Technology
ISSN :
0928-0707
eISSN :
1573-4846
Publisher :
Springer, Boston, United States - Massachusetts
Volume :
81
Issue :
1
Pages :
27-35
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 March 2016

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