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Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation
Gallium-containing alloys have recently been reported to hydrogenate CO(2) to methanol at ambient pressures. However, a full understanding of the Ga-promoted catalysts is still missing due to the lack of information about the surface structures formed under reaction conditions. Here, we employed nea...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397205/ https://www.ncbi.nlm.nih.gov/pubmed/37532720 http://dx.doi.org/10.1038/s41467-023-40361-3 |
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author | Lee, Si Woo Luna, Mauricio Lopez Berdunov, Nikolay Wan, Weiming Kunze, Sebastian Shaikhutdinov, Shamil Cuenya, Beatriz Roldan |
author_facet | Lee, Si Woo Luna, Mauricio Lopez Berdunov, Nikolay Wan, Weiming Kunze, Sebastian Shaikhutdinov, Shamil Cuenya, Beatriz Roldan |
author_sort | Lee, Si Woo |
collection | PubMed |
description | Gallium-containing alloys have recently been reported to hydrogenate CO(2) to methanol at ambient pressures. However, a full understanding of the Ga-promoted catalysts is still missing due to the lack of information about the surface structures formed under reaction conditions. Here, we employed near ambient pressure scanning tunneling microscopy and x-ray photoelectron spectroscopy to monitor the evolution of well-defined Cu-Ga surfaces during CO(2) hydrogenation. We show the formation of two-dimensional Ga(III) oxide islands embedded into the Cu surface in the reaction atmosphere. The islands are a few atomic layers in thickness and considerably differ from bulk Ga(2)O(3) polymorphs. Such a complex structure, which could not be determined with conventional characterization methods on powder catalysts, should be used for elucidating the reaction mechanism on the Ga-promoted metal catalysts. |
format | Online Article Text |
id | pubmed-10397205 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-103972052023-08-04 Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation Lee, Si Woo Luna, Mauricio Lopez Berdunov, Nikolay Wan, Weiming Kunze, Sebastian Shaikhutdinov, Shamil Cuenya, Beatriz Roldan Nat Commun Article Gallium-containing alloys have recently been reported to hydrogenate CO(2) to methanol at ambient pressures. However, a full understanding of the Ga-promoted catalysts is still missing due to the lack of information about the surface structures formed under reaction conditions. Here, we employed near ambient pressure scanning tunneling microscopy and x-ray photoelectron spectroscopy to monitor the evolution of well-defined Cu-Ga surfaces during CO(2) hydrogenation. We show the formation of two-dimensional Ga(III) oxide islands embedded into the Cu surface in the reaction atmosphere. The islands are a few atomic layers in thickness and considerably differ from bulk Ga(2)O(3) polymorphs. Such a complex structure, which could not be determined with conventional characterization methods on powder catalysts, should be used for elucidating the reaction mechanism on the Ga-promoted metal catalysts. Nature Publishing Group UK 2023-08-02 /pmc/articles/PMC10397205/ /pubmed/37532720 http://dx.doi.org/10.1038/s41467-023-40361-3 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Lee, Si Woo Luna, Mauricio Lopez Berdunov, Nikolay Wan, Weiming Kunze, Sebastian Shaikhutdinov, Shamil Cuenya, Beatriz Roldan Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title | Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title_full | Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title_fullStr | Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title_full_unstemmed | Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title_short | Unraveling surface structures of gallium promoted transition metal catalysts in CO(2) hydrogenation |
title_sort | unraveling surface structures of gallium promoted transition metal catalysts in co(2) hydrogenation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397205/ https://www.ncbi.nlm.nih.gov/pubmed/37532720 http://dx.doi.org/10.1038/s41467-023-40361-3 |
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