Parameters Influencing the Photocatalytic Activity of Suspension-Sprayed TiO2 Coatings

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dc.contributor.authorToma, Filofteia Laura
dc.contributor.authorBerger, Lutz Michael
dc.contributor.authorShakhverdova, Irina
dc.contributor.authorLeupolt, Beate
dc.contributor.authorPotthoff, Annegret
dc.contributor.authorOelschlägel, Kathrin
dc.contributor.authorMeissner, Tobias
dc.contributor.authorGomez, José Antonio Ibáñez
dc.contributor.authorde Miguel, Yolanda
dc.contributor.institutionTRAZABILIDAD CIRCULAR
dc.contributor.institutionMercado
dc.date.accessioned2024-07-24T11:59:51Z
dc.date.available2024-07-24T11:59:51Z
dc.date.issued2014-10
dc.descriptionPublisher Copyright: © 2014, ASM International.
dc.description.abstractPhotocatalytic properties of titania have been studied very intensively for a variety of applications, including air and water purification. In order to clarify the influence of the phase composition and other parameters, thermal spraying with suspensions was applied to produce photocatalytically active titania coatings starting from two commercially available anatase and rutile submicron powders. Aqueous suspensions containing 40% solids by weight were sprayed with an HVOF process using ethylene as the fuel gas. The spray parameters were chosen in order to produce mechanically stable coatings and to preserve a high content of the initial crystalline phases of the powders. The coating microstructures, phase compositions, and surface properties were characterized. The photocatalytic performance was evaluated by degradation of the pink dye Rhodamine B (RB) using two techniques: degradation of an aqueous solution of RB and discoloration of impregnated RB. All the coatings exhibited photocatalytic activity to varying degrees, depending on the phase composition as well as other factors, namely, the coating microstructure, surface morphology, surface hydroxylation, light absorption, and interaction with the pollutant.en
dc.description.sponsorshipThe authors would like to thank B. Wolf and S. Schultz (Fraunhofer IWS) for help with the metallographic preparation and the spectroscopy measurements and Dr. M. Yamada (Toyahashi University of Technology, Toyahashi, Japan) for kind delivery of the ceramic substrates. Part of this work was performed under DVS research project 02.064 ‘‘Funktionalisierung von Keramikoberflächen dur-ch thermisch gespritzte Schichten’’ (‘‘Functionalization of ceramic surfaces by thermal spraying’’), AiF No. 17.371 BR, funded via AiF by the Federal Ministry of Economics and Technology within the framework of the program for promotion of ‘‘Industrial Joint Research (IGF).’’ The authors gratefully acknowledge this financial support.
dc.description.statusPeer reviewed
dc.format.extent17
dc.identifier.citationToma , F L , Berger , L M , Shakhverdova , I , Leupolt , B , Potthoff , A , Oelschlägel , K , Meissner , T , Gomez , J A I & de Miguel , Y 2014 , ' Parameters Influencing the Photocatalytic Activity of Suspension-Sprayed TiO 2 Coatings ' , Journal of Thermal Spray Technology , vol. 23 , no. 7 , pp. 1037-1053 . https://doi.org/10.1007/s11666-014-0090-5
dc.identifier.doi10.1007/s11666-014-0090-5
dc.identifier.issn1059-9630
dc.identifier.urihttps://hdl.handle.net/11556/2986
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84895854699&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Thermal Spray Technology
dc.relation.projectIDDVS, 02.064
dc.relation.projectIDAllianz Industrie Forschung, AiF, 17.371 BR
dc.relation.projectIDBundesministerium für Wirtschaft und Technologie, BMWi
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsHVOF
dc.subject.keywordsNanocomposite structure
dc.subject.keywordsPhotocatalysis
dc.subject.keywordsPhotocatalytic activity
dc.subject.keywordsRhodamine B
dc.subject.keywordsSuspension
dc.subject.keywordsTiO
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsMaterials Chemistry
dc.titleParameters Influencing the Photocatalytic Activity of Suspension-Sprayed TiO2 Coatingsen
dc.typejournal article
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