Reactivity of Stone-Wales defect in graphene lattice – DFT study
2023 (English)In: FlatChem, E-ISSN 2452-2627, Vol. 42, article id 100573Article in journal (Refereed) Published
Abstract [en]
Understanding the reactivity of carbon surfaces is crucial for the development of advanced functional materials. The SW defect is commonly present in carbon materials, but a comprehensive understanding of its effects on the reactivity of carbons is missing. In this study, we systematically investigate the reactivity of graphene surfaces with the Stone-Wales (SW) defect using Density Functional Theory calculations. We explore the atomic adsorption of various elements, including rows 1–3 of the Periodic Table, potassium, calcium, and selected transition metals. Our results demonstrate that the SW defect enhances binding with the studied adsorbates when compared to pristine graphene, with carbon and silicon showing the most significant differences. Additionally, we examine the effects of mechanical deformation on the lattice by constraining the system with the SW defect to the pristine graphene cell. Interestingly, these constraints lead to even stronger binding interactions. Furthermore, for carbon, nitrogen, and oxygen adsorbates, we observe that mechanical deformation triggers the incorporation of adatoms into the carbon bond network, leading to the reorganization of the SW defect structure. This work establishes a foundation for future studies in the defect and strain engineering of graphene, opening avenues for developing advanced materials and catalysts with enhanced reactivity and performance.
Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 42, article id 100573
Keywords [en]
Atomic adsorption, Graphene, Mechanical deformation, Reactivity, Stone-Wales defect
National Category
Condensed Matter Physics
Research subject
Applied Physics
Identifiers
URN: urn:nbn:se:ltu:diva-102435DOI: 10.1016/j.flatc.2023.100573ISI: 001109922700001Scopus ID: 2-s2.0-85175831516OAI: oai:DiVA.org:ltu-102435DiVA, id: diva2:1811409
Funder
Swedish Research Council, 2018-05973
Note
Validerad;2023;Nivå 2;2023-11-15 (sofila);
Funder: Serbian Ministry of Science, Technological Development, and Innovation (451-03-47/2023-01/200146)
2023-11-132023-11-132024-11-20Bibliographically approved