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hal.structure.identifierDepartment of Chemistry
dc.contributor.authorFABRITCHNYI, Pavel B.
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorAFANASOV, Mikhail I.
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorASTASHKIN, R. A.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, Alain
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLABRUGÈRE, Christine
dc.date.issued2014
dc.identifier.issn0169-4332
dc.description.abstractEnInformation provided by 119Sn2+ Mössbauer probe ions, located on surface sites of anatase-type TiO2 microcrystals exposed, at room temperature, to a H2S/H2 mixture, has permitted to conclude that the interaction of H2S molecules with the substrate surface leads to the dissociation of a fraction of the absorbate molecules. This gives rise to the formation of elemental sulfur which oxidizes the neighboring Sn2+ ions, the produced Sn4+ ions being found coordinated only by S2− anions. Subsequent exposure to ambient air is shown to result in the oxidation of S2− ions, yielding both S0 and SO42−-like species, with concomitant stabilization of Sn4+ ions in coordination polyhedra where they are surrounded by only oxygen anions.
dc.language.isoen
dc.publisherElsevier
dc.subject.enSynthetic anatase
dc.subject.enTin dopant cations
dc.subject.en119Sn Mössbauer probe
dc.subject.enDissociative adsorption of H2S
dc.subject.enX-ray photoelectron spectroscopy
dc.title.enInteractions of Sn2+ dopant ions located on surface sites of anatase-type TiO2 with adsorbed H2S molecules studied using 119Sn Mössbauer spectroscopic probe
dc.typeArticle de revue
dc.identifier.doi10.1016/j.apsusc.2014.09.005
dc.subject.halChimie/Matériaux
bordeaux.journalApplied Surface Science
bordeaux.page482-486
bordeaux.volume320
bordeaux.peerReviewedoui
hal.identifierhal-01078367
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01078367v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Applied%20Surface%20Science&rft.date=2014&rft.volume=320&rft.spage=482-486&rft.epage=482-486&rft.eissn=0169-4332&rft.issn=0169-4332&rft.au=FABRITCHNYI,%20Pavel%20B.&AFANASOV,%20Mikhail%20I.&ASTASHKIN,%20R.%20A.&WATTIAUX,%20Alain&LABRUG%C3%88RE,%20Christine&rft.genre=article


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