Details

Autor(en) / Beteiligte

• Navarro-Rodriguez, M.
• Camús, V.
• Cros, A.
• Garro, N.
• Somoza, Andres M.
• Palacios-Lidon, E.

Titel

Exploring the structure and electronic properties of individual hybrid GO/rGO flakes

Ist Teil von

• Applied surface science, 2024-01, Vol.642, p.158611, Article 158611

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Despite its great potential, the use of graphene oxide (GO) in sensors, photocatalysis, or biomedicine applications is limited by its low conductivity. This drawback is typically overcome by using its reduced form (rGO) albeit sacrificing some of its extensive chemical properties. In this study, we unveil a non-uniform reduction process that enables the fabrication of hybrid flakes consisting of both size tunable GO and rGO regions. The nanoscale resolution of Kelvin probe force microscopy together with co-localized Raman spectroscopy allow us to correlate the local reduction degree with the nanoscale electronic properties, chemical composition, and structural defects. Additionally, we introduce a reliable metric for quantifying the extent of reduction. This research opens up possibilities for the development of new 2D nanohybrid materials that combine the high reactivity of GO and the enhanced conductivity of rGO, enabling applications in selective functionalization. [Display omitted] •GO and rGO are the two extremes of a family of materials with tuneable properties.•In disordered materials, nanoscale mechanisms control charge conductivity.•KPFM and co-localized Raman allows structural and electronic properties correlation.