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TiO2 Macroscopic Fibers Bearing Outstanding Photocatalytic Properties Obtained through an Integrative Chemistry-Based Scale-Up Semi-Industrial Process

Published online by Cambridge University Press:  19 May 2015

Natacha Kinadjian ,
Mickael le Bechec ,
Wilfrid Neri ,
Philippe Poulin ,
Sylvie Lacombe  and
Rénal Backov
Natacha Kinadjian
Affiliation:
Centre de Recherche Paul Pascal, UPR 8641-CNRS, Université de Bordeaux, 115 Avenue Albert Schweitzer, 33600 Pessac, France.
Mickael le Bechec
Affiliation:
IPREM-UMR CNRS 5254, Université de Pau et des Pays de l’Adour, Hélioparc-2 Av. du Président Angot, F-64053 Pau Cedex 09, France.
Wilfrid Neri
Affiliation:
Centre de Recherche Paul Pascal, UPR 8641-CNRS, Université de Bordeaux, 115 Avenue Albert Schweitzer, 33600 Pessac, France.
Philippe Poulin
Affiliation:
Centre de Recherche Paul Pascal, UPR 8641-CNRS, Université de Bordeaux, 115 Avenue Albert Schweitzer, 33600 Pessac, France.
Sylvie Lacombe
Affiliation:
IPREM-UMR CNRS 5254, Université de Pau et des Pays de l’Adour, Hélioparc-2 Av. du Président Angot, F-64053 Pau Cedex 09, France.
Rénal Backov
Affiliation:
Centre de Recherche Paul Pascal, UPR 8641-CNRS, Université de Bordeaux, 115 Avenue Albert Schweitzer, 33600 Pessac, France.
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Abstract

In here we depict the morphogenesis and associated properties of TiO2-based macroscopic fibers designed for the photodecomposition of volatile organic compounds (VOC). We employed a continuous industrially scalable extrusion-based process making the use of hybrid sols of amorphous titania nanoparticles, polyvinyl alcohol (PVA) and occasionally latex nanoparticles. This process allowed for the continuous generation of hybrid TiO2/latex/PVA or TiO2/PVA macroscopic fibers. Upon thermal treatment, biphasic porous fibers are obtained containing the anatase phase of TiO2 with 10-15% of brookite. These fibers, which can be manufactured under several hundred meter of length, are offering significantly improved phototocatalytic efficiency now comparable to the commercial Quartzel®PCO photocatalyst for gas-phase acetone mineralization.

Keywords

catalyticextrusionsol-gel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1804: Symposium RR – Solution Syntheses of Inorganic Functional/Multifunctional Materials , 2015 , pp. 7 - 12
Copyright
Copyright © Materials Research Society 2015 

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References

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