Interactions of Sn2+ dopant ions located on surface sites of anatase-type TiO2 with adsorbed H2S molecules studied using 119Sn Mössbauer spectroscopic probe
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | FABRITCHNYI, Pavel B. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | AFANASOV, Mikhail I. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | ASTASHKIN, R. A. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | WATTIAUX, Alain | |
| hal.structure.identifier | Plateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT] | |
| dc.contributor.author | LABRUGÈRE, Christine | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 0169-4332 | |
| dc.description.abstractEn | Information 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.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Synthetic anatase | |
| dc.subject.en | Tin dopant cations | |
| dc.subject.en | 119Sn Mössbauer probe | |
| dc.subject.en | Dissociative adsorption of H2S | |
| dc.subject.en | X-ray photoelectron spectroscopy | |
| dc.title.en | Interactions of Sn2+ dopant ions located on surface sites of anatase-type TiO2 with adsorbed H2S molecules studied using 119Sn Mössbauer spectroscopic probe | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.apsusc.2014.09.005 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Applied Surface Science | |
| bordeaux.page | 482-486 | |
| bordeaux.volume | 320 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01078367 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01078367v1 | |
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