Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth

The role of the Mo(2)C/oxide interface on multi-layer graphene (MLG) nucleation during a chemical vapor deposition (CVD) process is investigated. During the CVD process, MLG growth is only observed in the presence of a Mo(2)C/SiO(2) interface, indicating that the chemical reactions occurring at this...

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Autores principales: Kizir, Seda, van den Beld, Wesley T. E., Schurink, Bart, van de Kruijs, Robbert W. E., Benschop, Jos P. H., Bijkerk, Fred
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8319320/
https://www.ncbi.nlm.nih.gov/pubmed/34321528
http://dx.doi.org/10.1038/s41598-021-94694-4
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author Kizir, Seda
van den Beld, Wesley T. E.
Schurink, Bart
van de Kruijs, Robbert W. E.
Benschop, Jos P. H.
Bijkerk, Fred
author_facet Kizir, Seda
van den Beld, Wesley T. E.
Schurink, Bart
van de Kruijs, Robbert W. E.
Benschop, Jos P. H.
Bijkerk, Fred
author_sort Kizir, Seda
collection PubMed
description The role of the Mo(2)C/oxide interface on multi-layer graphene (MLG) nucleation during a chemical vapor deposition (CVD) process is investigated. During the CVD process, MLG growth is only observed in the presence of a Mo(2)C/SiO(2) interface, indicating that the chemical reactions occurring at this interface trigger the nucleation of MLG. The chemical reaction pathway is explained in four steps as (1) creation of H radicals, (2) reduction of the oxide surface, (3) formation of C–C bonds at O–H sites, and (4) expansion of graphitic domains on the Mo(2)C catalyst. Different Mo(2)C/oxide interfaces are investigated, with varying affinity for reduction in a hydrogen environment. The results demonstrate a catalyst/oxide bifunctionality on MLG nucleation, comprising of CH(4) dehydrogenation by Mo(2)C and initial C–C bond formation at the oxide interface.
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spelling pubmed-83193202021-07-29 Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth Kizir, Seda van den Beld, Wesley T. E. Schurink, Bart van de Kruijs, Robbert W. E. Benschop, Jos P. H. Bijkerk, Fred Sci Rep Article The role of the Mo(2)C/oxide interface on multi-layer graphene (MLG) nucleation during a chemical vapor deposition (CVD) process is investigated. During the CVD process, MLG growth is only observed in the presence of a Mo(2)C/SiO(2) interface, indicating that the chemical reactions occurring at this interface trigger the nucleation of MLG. The chemical reaction pathway is explained in four steps as (1) creation of H radicals, (2) reduction of the oxide surface, (3) formation of C–C bonds at O–H sites, and (4) expansion of graphitic domains on the Mo(2)C catalyst. Different Mo(2)C/oxide interfaces are investigated, with varying affinity for reduction in a hydrogen environment. The results demonstrate a catalyst/oxide bifunctionality on MLG nucleation, comprising of CH(4) dehydrogenation by Mo(2)C and initial C–C bond formation at the oxide interface. Nature Publishing Group UK 2021-07-28 /pmc/articles/PMC8319320/ /pubmed/34321528 http://dx.doi.org/10.1038/s41598-021-94694-4 Text en © The Author(s) 2021 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Kizir, Seda
van den Beld, Wesley T. E.
Schurink, Bart
van de Kruijs, Robbert W. E.
Benschop, Jos P. H.
Bijkerk, Fred
Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title_full Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title_fullStr Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title_full_unstemmed Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title_short Bifunctional catalytic effect of Mo(2)C/oxide interface on multi-layer graphene growth
title_sort bifunctional catalytic effect of mo(2)c/oxide interface on multi-layer graphene growth
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8319320/
https://www.ncbi.nlm.nih.gov/pubmed/34321528
http://dx.doi.org/10.1038/s41598-021-94694-4
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