Comparative study on the photocatalytic behaviour of titanium oxide thermal sprayed coatings from powders and suspensions

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dc.contributor.authorToma, F. L.
dc.contributor.authorBerger, L. M.
dc.contributor.authorJacquet, D.
dc.contributor.authorWicky, D.
dc.contributor.authorVillaluenga, I.
dc.contributor.authorde Miguel, Y. R.
dc.contributor.authorLindeløv, J. S.
dc.contributor.institutionMercado
dc.date.accessioned2024-07-24T12:02:34Z
dc.date.available2024-07-24T12:02:34Z
dc.date.issued2009-05-25
dc.description.abstractThis work presents a study of the microstructures and photocatalytic behaviour of titanium oxide coatings obtained by thermal spraying of agglomerated nanopowders and suspensions. Fine TiO2 Degussa P25 nanopowder, generally considered as the reference material in photocatalytic applications, was used as the material feedstock. HVOF process and suspension thermal spraying were used to prepare photocatalytic titania coatings. The coatings were mainly characterised by means of SEM and X-ray diffraction. The photocatalytic performance was evaluated based on decolouration of the pink dye Rhodamine B and degradation of gaseous acetaldehyde. A lower degree of pollutant degradation was found for deposits prepared by HVOF spraying of granules due principally to the low content of the photocatalytically active phase, i.e. anatase. Complete photocatalytic degradation of the organic compounds was recorded for the suspension-sprayed coatings. Based on the current results, suspension thermal spraying appears to be the better choice for preparing photocatalytically active titanium oxide surfaces for the removal of organic pollutants.en
dc.description.statusPeer reviewed
dc.format.extent7
dc.identifier.citationToma , F L , Berger , L M , Jacquet , D , Wicky , D , Villaluenga , I , de Miguel , Y R & Lindeløv , J S 2009 , ' Comparative study on the photocatalytic behaviour of titanium oxide thermal sprayed coatings from powders and suspensions ' , Surface and Coatings Technology , vol. 203 , no. 15 , pp. 2150-2156 . https://doi.org/10.1016/j.surfcoat.2008.10.022
dc.identifier.doi10.1016/j.surfcoat.2008.10.022
dc.identifier.issn0257-8972
dc.identifier.urihttps://hdl.handle.net/11556/3257
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=62949166440&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofSurface and Coatings Technology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsAcetaldehyde
dc.subject.keywordsAgglomerated nanopowder
dc.subject.keywordsPhotocatalysis
dc.subject.keywordsPhotocatalytic activity
dc.subject.keywordsRhodamine B
dc.subject.keywordsSuspension
dc.subject.keywordsThermal spraying
dc.subject.keywordsTiO
dc.subject.keywordsGeneral Chemistry
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsSurfaces and Interfaces
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsMaterials Chemistry
dc.titleComparative study on the photocatalytic behaviour of titanium oxide thermal sprayed coatings from powders and suspensionsen
dc.typejournal article
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