Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth

Abstract The role of the Mo2C/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 Mo2C/SiO2 interface, indicating that the chemical reactions occurring at t...

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Autores principales:	Seda Kizir, Wesley T. E. van den Beld, Bart Schurink, Robbert W. E. van de Kruijs, Jos P. H. Benschop, Fred Bijkerk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d5a54b7e44944ef6b8e597cf16f121db
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spelling	oai:doaj.org-article:d5a54b7e44944ef6b8e597cf16f121db2021-12-02T16:06:42ZBifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth10.1038/s41598-021-94694-42045-2322https://doaj.org/article/d5a54b7e44944ef6b8e597cf16f121db2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94694-4https://doaj.org/toc/2045-2322Abstract The role of the Mo2C/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 Mo2C/SiO2 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 Mo2C catalyst. Different Mo2C/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 CH4 dehydrogenation by Mo2C and initial C–C bond formation at the oxide interface.Seda KizirWesley T. E. van den BeldBart SchurinkRobbert W. E. van de KruijsJos P. H. BenschopFred BijkerkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seda Kizir Wesley T. E. van den Beld Bart Schurink Robbert W. E. van de Kruijs Jos P. H. Benschop Fred Bijkerk Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
description	Abstract The role of the Mo2C/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 Mo2C/SiO2 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 Mo2C catalyst. Different Mo2C/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 CH4 dehydrogenation by Mo2C and initial C–C bond formation at the oxide interface.
format	article
author	Seda Kizir Wesley T. E. van den Beld Bart Schurink Robbert W. E. van de Kruijs Jos P. H. Benschop Fred Bijkerk
author_facet	Seda Kizir Wesley T. E. van den Beld Bart Schurink Robbert W. E. van de Kruijs Jos P. H. Benschop Fred Bijkerk
author_sort	Seda Kizir
title	Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
title_short	Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
title_full	Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
title_fullStr	Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
title_full_unstemmed	Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth
title_sort	bifunctional catalytic effect of mo2c/oxide interface on multi-layer graphene growth
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d5a54b7e44944ef6b8e597cf16f121db
work_keys_str_mv	AT sedakizir bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth AT wesleytevandenbeld bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth AT bartschurink bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth AT robbertwevandekruijs bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth AT josphbenschop bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth AT fredbijkerk bifunctionalcatalyticeffectofmo2coxideinterfaceonmultilayergraphenegrowth
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Bifunctional catalytic effect of Mo2C/oxide interface on multi-layer graphene growth

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