doi:10.1021/acs.jpcc.3c06871engBarrionuevo, Santiago D.Fioravanti, FedericoNúñez, Jorge M.Muñeton Arboleda, DavidLacconi, Gabriela I.Bellino, Martín G.Aguirre, Myriam H.Ibáñez, Francisco J.Stacking-configuration-preserved Graphene quantum dots electrochemically obtained from CVD GrapheneART-2024-137538The layer stacking morphology in nanocarbons is paramount for achieving new properties and outperforming applications. Here, we demonstrate that graphene quantum dots (GQDs) retain crystallinity and a stacking structure from CVD graphene grown on Ni foam. Our results reveal that GQD subdomains comprise a few-layer graphene structure in the 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 GQDs with 2–6 graphene layers thick indicating a 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 multilayer carbon structures. This work demonstrates a relatively easy electrochemical synthesis to obtain GQDs which retain the pristine and, in turn, distinctive structure of graphene grown on Ni foam.2024http://zaguan.unizar.es/record/13222110.1021/acs.jpcc.3c06871http://zaguan.unizar.es/record/132221oai:zaguan.unizar.es:132221info:eu-repo/grantAgreement/EC/H2020/101007825/EU/ULtra ThIn MAgneto Thermal sEnsor-Ing/ULTIMATE-IThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101007825-ULTIMATE-Iinfo:eu-repo/grantAgreement/EC/H2020/872631 /EU/Memristive and multiferroic materials for emergent logic units in nanoelectronics/MELONThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 872631 -MELONJournal of physical chemistry. C. 128, 3 (2024), 1393-1403All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess