New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes
- Autores
- Carro, Pilar; Andreasen, Gustavo; Vericat, Carolina; Vela, María Elena; Salvarezza, Roberto Carlos
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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).
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Física
Gold
Sulfur adsorption
Surface structures
Gold‑sulfur complexes - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/125106
Ver los metadatos del registro completo
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New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexesCarro, PilarAndreasen, GustavoVericat, CarolinaVela, María ElenaSalvarezza, Roberto CarlosCiencias ExactasQuímicaFísicaGoldSulfur adsorptionSurface structuresGold‑sulfur complexesSulfur 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).Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2019-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf848-856http://sedici.unlp.edu.ar/handle/10915/125106enginfo:eu-repo/semantics/altIdentifier/issn/0169-4332info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apsusc.2019.05.167info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:21:37Zoai:sedici.unlp.edu.ar:10915/125106Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:21:37.811SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| title |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| spellingShingle |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes Carro, Pilar Ciencias Exactas Química Física Gold Sulfur adsorption Surface structures Gold‑sulfur complexes |
| title_short |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| title_full |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| title_fullStr |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| title_full_unstemmed |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| title_sort |
New aspects of the surface chemistry of sulfur on Au(111): Surface structures formed by gold-sulfur complexes |
| dc.creator.none.fl_str_mv |
Carro, Pilar Andreasen, Gustavo Vericat, Carolina Vela, María Elena Salvarezza, Roberto Carlos |
| author |
Carro, Pilar |
| author_facet |
Carro, Pilar Andreasen, Gustavo Vericat, Carolina Vela, María Elena Salvarezza, Roberto Carlos |
| author_role |
author |
| author2 |
Andreasen, Gustavo Vericat, Carolina Vela, María Elena Salvarezza, Roberto Carlos |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química Física Gold Sulfur adsorption Surface structures Gold‑sulfur complexes |
| topic |
Ciencias Exactas Química Física Gold Sulfur adsorption Surface structures Gold‑sulfur complexes |
| dc.description.none.fl_txt_mv |
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). Facultad de Ciencias Exactas Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| description |
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). |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-09 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/125106 |
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http://sedici.unlp.edu.ar/handle/10915/125106 |
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eng |
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eng |
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