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dc.date.accessioned 2021-09-17T17:14:35Z
dc.date.available 2021-09-17T17:14:35Z
dc.date.issued 2019-09
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/125106
dc.description.abstract Sulfur adsorption on gold surfaces has been extensively studied because of the key role of sulfur species in heterogeneous catalysis, and, more recently, due to the interest in the synthesis of anisotropic gold nanoparticles with potential applications in medicine that involves sulfide reduction. Here we report new surface structures for sulfur on Au(111) by combining in situ scanning tunneling microscopy in aqueous sodium sulfide solutions and density functional theory calculations. Our results show two related lattices, (3√3 × 3√3) R30° (θ = 0.22) and (√7 × √7) R19.1° (θ = 0.57), that involve AuS3 complexes as building blocks. Gold‑sulfur complexes are formed by the lifting of gold atoms from the substrate surface as revealed by density functional theory calculations. These species, intermediate between adsorbed S in the well-known (√3 × √3)-R30○ lattice and adsorbed polysulfides in organized rectangular structures, explain the surface coverage of gold vacancy islands, a fingerprint of S adsorption on Au(111). en
dc.format.extent 848-856 es
dc.language en es
dc.subject Gold es
dc.subject Sulfur adsorption es
dc.subject Surface structures es
dc.subject Gold‑sulfur complexes es
dc.title New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes en
dc.type Articulo es
sedici.identifier.other doi:10.1016/j.apsusc.2019.05.167 es
sedici.identifier.issn 0169-4332 es
sedici.creator.person Carro, Pilar es
sedici.creator.person Andreasen, Gustavo es
sedici.creator.person Vericat, Carolina es
sedici.creator.person Vela, María Elena es
sedici.creator.person Salvarezza, Roberto Carlos es
sedici.subject.materias Ciencias Exactas es
sedici.subject.materias Química es
sedici.subject.materias Física es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Exactas es
mods.originInfo.place Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Applied Surface Science es
sedici.relation.journalVolumeAndIssue vol. 487 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)