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Poster (Scientific congresses and symposiums)
Photocatalytic TiO2 Macroscopic Fibers Obtained Through Integrative Chemistry
Kinadjian, Natacha; Le Bechec, Mickael; Pigot, Thierry et al.
2013Third International Conference on Multifunctional, Hybrid and Nanomaterials
 

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Abstract :
[en] The photocatalytic properties of titanium dioxide depend not only on its electronic properties, but also on the material size and shape, which can increase interactions between the reactants and catalyst. Most studies to date show that reducing the particle size down to the nanoscale increases photocatalytic efficiency, as a result of a higher surface to volume ratio and because a larger proportion of the material is actually irradiated by light. We demonstrate that a multiscale shape design, which integrates surface roughness, particle shape, and 1D material processing and orientation, can favor photocatalytic properties in the solidgas regime, especially mineralization (conversion into CO2), when the hierarchical 1D orientation of the material is combined with unidirectional gas flow. Several materials with hierarchical structure were prepared and characterized. They have been tested for the photocatalytic mineralization of gaseous acetone and compared with commercial catalysts. Our study reveals that a suitable combination of multiscale design and optimization of the material orientation and gas flow favors high mineralization.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Kinadjian, Natacha ;  Université de Liège - ULiège > Doct. sc. (chimie - Bologne)
Le Bechec, Mickael
Pigot, Thierry
Dufour, Fabien
Durupthy, Olivier
Bentaleb, Ahmed
Prouzet, Eric
Lacombe, Sylvie
Backov, Rénal
Language :
English
Title :
Photocatalytic TiO2 Macroscopic Fibers Obtained Through Integrative Chemistry
Publication date :
March 2013
Event name :
Third International Conference on Multifunctional, Hybrid and Nanomaterials
Event date :
du 3 mars 2013 au 7 mars 2013
Audience :
International
Available on ORBi :
since 20 August 2013

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