On the nature of defects in liquid-phase exfoliated graphene
Fil: Bracamonte, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
| Main Authors: | , , , |
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| Format: | submittedVersion |
| Language: | eng |
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2021
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| Online Access: | http://hdl.handle.net/11086/20398 https://doi.org/10.1021/jp501930a |
| _version_ | 1801212632671191040 |
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| author | Bracamonte, María Victoria Lacconi, Gabriela Inés Urreta, Silvia Elena Foa Torres, Luis Eduardo Francisco |
| author_facet | Bracamonte, María Victoria Lacconi, Gabriela Inés Urreta, Silvia Elena Foa Torres, Luis Eduardo Francisco |
| author_sort | Bracamonte, María Victoria |
| collection | Repositorio Digital Universitario |
| description | Fil: Bracamonte, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. |
| format | submittedVersion |
| id | rdu-unc.20398 |
| institution | Universidad Nacional de Cordoba |
| language | eng |
| publishDate | 2021 |
| record_format | dspace |
| spelling | rdu-unc.203982022-10-13T11:06:27Z On the nature of defects in liquid-phase exfoliated graphene Bracamonte, María Victoria Lacconi, Gabriela Inés Urreta, Silvia Elena Foa Torres, Luis Eduardo Francisco Raman Carbon-based materials Ultrasound Graphene dispersions submittedVersion Fil: Bracamonte, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Bracamonte, María Victoria. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Fil: Lacconi, Gabriela Inés. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Fisicoquímica; Argentina. Fil: Lacconi, Gabriela Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Fisicoquímica de Córdoba; Argentina. Fil: Urreta, Silvia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Fil: Foa Torres, Luis Eduardo Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Foa Torres, Luis Eduardo Francisco. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Liquid-phase exfoliation is one of the most promising routes for large-scale production of multilayer graphene dispersions. These dispersions, which may be used in coatings, composites, or paints, are believed to contain disorder-free graphene multilayers. Here, we address the nature of defects in such samples obtained by liquid-phase exfoliation of graphite powder in N-methyl-2-pyrrolidone. Our Raman spectroscopy data challenge the assumption that these multilayers are free of bulk defects, revealing that defect localization strongly depends on the sonication time. For short ultrasound times, defects are located mainly at the layer edges but they turn out to build up in the bulk for ultrasonic times above 2 h. This knowledge may help to devise better strategies to achieve high-quality graphene dispersions. submittedVersion Fil: Bracamonte, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Bracamonte, María Victoria. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Fil: Lacconi, Gabriela Inés. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Fisicoquímica; Argentina. Fil: Lacconi, Gabriela Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Fisicoquímica de Córdoba; Argentina. Fil: Urreta, Silvia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Fil: Foa Torres, Luis Eduardo Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Foa Torres, Luis Eduardo Francisco. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Física de los Materiales Condensados 2021-09-21T17:50:51Z 2021-09-21T17:50:51Z 2014 article Bracamonte, M. V., Lacconi, G. I., Urreta, S. E. y Foa Torres, L. E. F. (2014). On the nature of defects in liquid-phase exfoliated graphene. Journal of Physical Chemistry C, 118 (28), 15455-15459. https://doi.org/10.1021/jp501930a http://hdl.handle.net/11086/20398 https://doi.org/10.1021/jp501930a eng Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Impreso; Electrónico y/o Digital ISSN 1932-7447 |
| spellingShingle | Raman Carbon-based materials Ultrasound Graphene dispersions Bracamonte, María Victoria Lacconi, Gabriela Inés Urreta, Silvia Elena Foa Torres, Luis Eduardo Francisco On the nature of defects in liquid-phase exfoliated graphene |
| title | On the nature of defects in liquid-phase exfoliated graphene |
| title_full | On the nature of defects in liquid-phase exfoliated graphene |
| title_fullStr | On the nature of defects in liquid-phase exfoliated graphene |
| title_full_unstemmed | On the nature of defects in liquid-phase exfoliated graphene |
| title_short | On the nature of defects in liquid-phase exfoliated graphene |
| title_sort | on the nature of defects in liquid phase exfoliated graphene |
| topic | Raman Carbon-based materials Ultrasound Graphene dispersions |
| url | http://hdl.handle.net/11086/20398 https://doi.org/10.1021/jp501930a |
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