Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site

[Image: see text] Steps at metal surfaces may influence energetics and kinetics of catalytic reactions in unexpected ways. Here, we report a significant reduction of the CO saturation coverage in Pd vicinal surfaces, which in turn is relevant for the light-off of the CO oxidation reaction. The study...

Descripción completa

Detalles Bibliográficos
Autores principales: Garcia-Martinez, Fernando, Dietze, Elisabeth, Schiller, Frederik, Gajdek, Dorotea, Merte, Lindsay R., Gericke, Sabrina M., Zetterberg, Johan, Albertin, Stefano, Lundgren, Edvin, Grönbeck, Henrik, Ortega, J. Enrique
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8503880/
https://www.ncbi.nlm.nih.gov/pubmed/34559547
http://dx.doi.org/10.1021/acs.jpclett.1c02639
_version_ 1784581218174500864
author Garcia-Martinez, Fernando
Dietze, Elisabeth
Schiller, Frederik
Gajdek, Dorotea
Merte, Lindsay R.
Gericke, Sabrina M.
Zetterberg, Johan
Albertin, Stefano
Lundgren, Edvin
Grönbeck, Henrik
Ortega, J. Enrique
author_facet Garcia-Martinez, Fernando
Dietze, Elisabeth
Schiller, Frederik
Gajdek, Dorotea
Merte, Lindsay R.
Gericke, Sabrina M.
Zetterberg, Johan
Albertin, Stefano
Lundgren, Edvin
Grönbeck, Henrik
Ortega, J. Enrique
author_sort Garcia-Martinez, Fernando
collection PubMed
description [Image: see text] Steps at metal surfaces may influence energetics and kinetics of catalytic reactions in unexpected ways. Here, we report a significant reduction of the CO saturation coverage in Pd vicinal surfaces, which in turn is relevant for the light-off of the CO oxidation reaction. The study is based on a systematic investigation of CO adsorption on vicinal Pd(111) surfaces making use of a curved Pd crystal. A combined X-ray Photoelectron Spectroscopy and DFT analysis allows us to demonstrate that an entire row of atomic sites under Pd steps remains free of CO upon saturation at 300 K, leading to a step-density-dependent reduction of CO coverage that correlates with the observed decrease of the light-off temperature during CO oxidation in vicinal Pd surfaces.
format Online
Article
Text
id pubmed-8503880
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-85038802021-10-12 Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site Garcia-Martinez, Fernando Dietze, Elisabeth Schiller, Frederik Gajdek, Dorotea Merte, Lindsay R. Gericke, Sabrina M. Zetterberg, Johan Albertin, Stefano Lundgren, Edvin Grönbeck, Henrik Ortega, J. Enrique J Phys Chem Lett [Image: see text] Steps at metal surfaces may influence energetics and kinetics of catalytic reactions in unexpected ways. Here, we report a significant reduction of the CO saturation coverage in Pd vicinal surfaces, which in turn is relevant for the light-off of the CO oxidation reaction. The study is based on a systematic investigation of CO adsorption on vicinal Pd(111) surfaces making use of a curved Pd crystal. A combined X-ray Photoelectron Spectroscopy and DFT analysis allows us to demonstrate that an entire row of atomic sites under Pd steps remains free of CO upon saturation at 300 K, leading to a step-density-dependent reduction of CO coverage that correlates with the observed decrease of the light-off temperature during CO oxidation in vicinal Pd surfaces. American Chemical Society 2021-09-24 2021-10-07 /pmc/articles/PMC8503880/ /pubmed/34559547 http://dx.doi.org/10.1021/acs.jpclett.1c02639 Text en © 2021 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Garcia-Martinez, Fernando
Dietze, Elisabeth
Schiller, Frederik
Gajdek, Dorotea
Merte, Lindsay R.
Gericke, Sabrina M.
Zetterberg, Johan
Albertin, Stefano
Lundgren, Edvin
Grönbeck, Henrik
Ortega, J. Enrique
Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title_full Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title_fullStr Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title_full_unstemmed Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title_short Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
title_sort reduced carbon monoxide saturation coverage on vicinal palladium surfaces: the importance of the adsorption site
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8503880/
https://www.ncbi.nlm.nih.gov/pubmed/34559547
http://dx.doi.org/10.1021/acs.jpclett.1c02639
work_keys_str_mv AT garciamartinezfernando reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT dietzeelisabeth reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT schillerfrederik reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT gajdekdorotea reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT mertelindsayr reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT gerickesabrinam reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT zetterbergjohan reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT albertinstefano reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT lundgrenedvin reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT gronbeckhenrik reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite
AT ortegajenrique reducedcarbonmonoxidesaturationcoverageonvicinalpalladiumsurfacestheimportanceoftheadsorptionsite

Ejemplares similares