The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)

The adsorption of methanol (CH(3)OH) at the Fe(3)O(4)(001)−(√2 × √2)R45° surface was studied using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and temperature-programmed desorption (TPD). CH(3)OH adsorbs exclusively at surface defect sites at room temperature to form hydroxyl gr...

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Detalles Bibliográficos
Autores principales: Gamba, Oscar, Hulva, Jan, Pavelec, Jiri, Bliem, Roland, Schmid, Michael, Diebold, Ulrike, Parkinson, Gareth S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6979651/
https://www.ncbi.nlm.nih.gov/pubmed/32025174
http://dx.doi.org/10.1007/s11244-016-0713-9
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author Gamba, Oscar
Hulva, Jan
Pavelec, Jiri
Bliem, Roland
Schmid, Michael
Diebold, Ulrike
Parkinson, Gareth S.
author_facet Gamba, Oscar
Hulva, Jan
Pavelec, Jiri
Bliem, Roland
Schmid, Michael
Diebold, Ulrike
Parkinson, Gareth S.
author_sort Gamba, Oscar
collection PubMed
description The adsorption of methanol (CH(3)OH) at the Fe(3)O(4)(001)−(√2 × √2)R45° surface was studied using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and temperature-programmed desorption (TPD). CH(3)OH adsorbs exclusively at surface defect sites at room temperature to form hydroxyl groups and methoxy (CH(3)O) species. Active sites are identified as step edges, iron adatoms, antiphase domain boundaries in the (√2 × √2)R45° reconstruction, and above Fe atoms incorporated in the subsurface. In TPD, recombinative desorption is observed around 300 K, and a disproportionation reaction to form methanol and formaldehyde occurs at 470 K.
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spelling pubmed-69796512020-02-03 The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001) Gamba, Oscar Hulva, Jan Pavelec, Jiri Bliem, Roland Schmid, Michael Diebold, Ulrike Parkinson, Gareth S. Top Catal Original Paper The adsorption of methanol (CH(3)OH) at the Fe(3)O(4)(001)−(√2 × √2)R45° surface was studied using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and temperature-programmed desorption (TPD). CH(3)OH adsorbs exclusively at surface defect sites at room temperature to form hydroxyl groups and methoxy (CH(3)O) species. Active sites are identified as step edges, iron adatoms, antiphase domain boundaries in the (√2 × √2)R45° reconstruction, and above Fe atoms incorporated in the subsurface. In TPD, recombinative desorption is observed around 300 K, and a disproportionation reaction to form methanol and formaldehyde occurs at 470 K. Springer US 2016-09-13 2017 /pmc/articles/PMC6979651/ /pubmed/32025174 http://dx.doi.org/10.1007/s11244-016-0713-9 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Paper
Gamba, Oscar
Hulva, Jan
Pavelec, Jiri
Bliem, Roland
Schmid, Michael
Diebold, Ulrike
Parkinson, Gareth S.
The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title_full The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title_fullStr The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title_full_unstemmed The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title_short The Role of Surface Defects in the Adsorption of Methanol on Fe(3)O(4)(001)
title_sort role of surface defects in the adsorption of methanol on fe(3)o(4)(001)
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6979651/
https://www.ncbi.nlm.nih.gov/pubmed/32025174
http://dx.doi.org/10.1007/s11244-016-0713-9
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