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A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process
Chemical vapor deposition (CVD) of carbon precursors employing a metal catalyst is a well-established method for synthesizing high-quality single-layer graphene. Yet the main challenge of the CVD process is the required transfer of a graphene layer from the substrate surface onto a chosen target sub...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5629405/ https://www.ncbi.nlm.nih.gov/pubmed/29046849 http://dx.doi.org/10.3762/bjnano.8.202 |
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author | Krauß, Peter Engstler, Jörg Schneider, Jörg J |
author_facet | Krauß, Peter Engstler, Jörg Schneider, Jörg J |
author_sort | Krauß, Peter |
collection | PubMed |
description | Chemical vapor deposition (CVD) of carbon precursors employing a metal catalyst is a well-established method for synthesizing high-quality single-layer graphene. Yet the main challenge of the CVD process is the required transfer of a graphene layer from the substrate surface onto a chosen target substrate. This process is delicate and can severely degrade the quality of the transferred graphene. The protective polymer coatings typically used generate residues and contamination on the ultrathin graphene layer. In this work, we have developed a graphene transfer process which works without a coating and allows the transfer of graphene onto arbitrary substrates without the need for any additional post-processing. During the course of our transfer studies, we found that the etching process that is usually employed can lead to contamination of the graphene layer with the Faradaic etchant component FeCl(3), resulting in the deposition of iron oxide Fe(x)O(y) nanoparticles on the graphene surface. We systematically analyzed the removal of the copper substrate layer and verified that crystalline iron oxide nanoparticles could be generated in controllable density on the graphene surface when this process is optimized. It was further confirmed that the Fe(x)O(y) particles on graphene are active in the catalytic growth of carbon nanotubes when employing a water-assisted CVD process. |
format | Online Article Text |
id | pubmed-5629405 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-56294052017-10-18 A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process Krauß, Peter Engstler, Jörg Schneider, Jörg J Beilstein J Nanotechnol Full Research Paper Chemical vapor deposition (CVD) of carbon precursors employing a metal catalyst is a well-established method for synthesizing high-quality single-layer graphene. Yet the main challenge of the CVD process is the required transfer of a graphene layer from the substrate surface onto a chosen target substrate. This process is delicate and can severely degrade the quality of the transferred graphene. The protective polymer coatings typically used generate residues and contamination on the ultrathin graphene layer. In this work, we have developed a graphene transfer process which works without a coating and allows the transfer of graphene onto arbitrary substrates without the need for any additional post-processing. During the course of our transfer studies, we found that the etching process that is usually employed can lead to contamination of the graphene layer with the Faradaic etchant component FeCl(3), resulting in the deposition of iron oxide Fe(x)O(y) nanoparticles on the graphene surface. We systematically analyzed the removal of the copper substrate layer and verified that crystalline iron oxide nanoparticles could be generated in controllable density on the graphene surface when this process is optimized. It was further confirmed that the Fe(x)O(y) particles on graphene are active in the catalytic growth of carbon nanotubes when employing a water-assisted CVD process. Beilstein-Institut 2017-09-26 /pmc/articles/PMC5629405/ /pubmed/29046849 http://dx.doi.org/10.3762/bjnano.8.202 Text en Copyright © 2017, Krauß et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Krauß, Peter Engstler, Jörg Schneider, Jörg J A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title | A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title_full | A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title_fullStr | A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title_full_unstemmed | A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title_short | A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
title_sort | systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5629405/ https://www.ncbi.nlm.nih.gov/pubmed/29046849 http://dx.doi.org/10.3762/bjnano.8.202 |
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