Stacking-configuration-preserved Graphene Quantum Dots Electrochemically Obtained from CVD Graphene
![Thumbnail](/bitstream/handle/11086/552604/Stacking-configuration-preserved%20Graphene%20Quantum%20Dots%20Electrochemically%20Obtained%20from%20CVD%20Graphene.pdf.jpg?sequence=6&isAllowed=y)
Date
2024-03-18Author
Barrionuevo, Santiago D.
Fioravanti, Federico
Nuñez, Jorge M.
Muñeton Arboleda, David
Lacconi, Gabriela I.
Bellino, Martin G.
Aguirre, Myriam H.
Ibañez, Francisco J.
ORCID
https://orcid.org/0000-0002-4870-343Xhttps://orcid.org/0000-0003-2328-7449
https://orcid.org/0000-0001-6386-9959
https://orcid.org/0000-0002-9518-7343
https://orcid.org/0000-0002-6713-6688
https://orcid.org/0000-0002-1296-4793
Metadata
Show full item recordAbstract
ESTE ES UN PREPRINT PUBLICADO EN ARXIV.
FUE PUBLICADO POR LA AMERICAN CHEMICAL SOCIETY EN LA REVISTA J. PHYS. CHEM. C 2024, 128, 3, 1393–1403. PUBLICATION DATE: JANUARY 10, 2024. EL ARTÍCULO ORIGINAL SE ENCUENTRA EMBARGADO HASTA EL 11 DE ENERO 2025.
The layer stacking morphology in nanocarbons is paramount for achieving new properties and outperforming applications. Here, we demonstrate that graphene quantum dots (GQDs) retained crystallinity and stacking structure from CVD graphene grown on Ni foam. Our results reveal that GQDs subdomains comprise a few layer graphene structure in AB…AB and ABC…ABC stacking configuration. HR-TEM images along with a multiple-approach characterization (XRD, XPS, UV-vis, AFM, and ATR-IR) exhibit ~3.0 to ~8.0 nm crystalline graphene quantum dots (GQDs) with 2-6 graphene layers in disk-shape structure. The UV-vis profiles show changes in color of the dispersion (from colorless to red) during and after the electrochemistry suggesting a systematic electrooxidation of graphene into smaller, highly crystalline, and more complex sp2 /sp3 structures. Importantly, a control experiment performed under the same conditions but with a graphitic rod exhibited large, polydisperse, and multi-layer carbon structures. This work demonstrates a relatively easy electrochemical synthesis to obtain GQDs retaining the pristine and in turn, distinctive structure of graphene grown on Ni foam.
xmlui.dri2xhtml.METS-1.0.item-citation
Barrionuevo, S. D., Fioravanti, F., Nuñez, J. M., Arboleda, D. M., Lacconi, G. I., Bellino, M. G., ... & Ibañez, F. J. (2024). Stacking-Configuration-Preserved Graphene Quantum Dots Electrochemically Obtained from CVD Graphene. arXiv preprint arXiv:2403.11922.
Collections
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
Related items
Showing items related by title, author, creator and subject.
-
Transporte de carga en nanoestructuras de carbono en presencia de defectos
Ingaramo, Lucas Hernán (2016-10-17)En esta tesis se presenta un estudio de diferentes aspectos del transporte de carga y valle en nanoestructuras basadas en carbono y la influencia de defectos en el material. La tesis esta dividida en dos bloques. La primera ... -
Irradiated graphene as a tunable Floquet topological insulator
Usaj, Gonzalo; Pérez Piskunow, Pablo Matías; Foa Torres, Luis Eduardo Francisco; Balseiro, Carlos A. (2014)In the presence of a circularly polarized mid-infrared radiation graphene develops dynamical band gaps in its quasienergy band structure and becomes a Floquet insulator. Here, we analyze how topologically protected edge ... -
On the nature of defects in liquid-phase exfoliated graphene
Bracamonte, María Victoria; Lacconi, Gabriela Inés; Urreta, Silvia Elena; Foa Torres, Luis Eduardo Francisco (2014)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 ...