Edge Exposure and Electrochemical Modulation of Graphene Oxide by Focused Cu Ion Bombardment
Abstract
redox probe revealed significantly enhanced electrochemical activity in and around the irradiated regions. This enhancement is likely influenced by local thinning of the graphene oxide layer and the increased exposure of reactive edge regions generated during irradiation rather than adsorption effects being the dominant factor. Elemental mapping confirmed a depletion of the Ru signal within bombarded stripes, supporting the structural origin of activity enhancement. These findings establish Cu-ion irradiation as a reagent-free, maskless approach for nanoscale patterning of electrochemically active regions in graphene oxide, with potential applications in sensing, catalysis, and electronic devices.
Fields of Study & Subjects
Graphene research and applications
Ion-surface interactions and analysis
Advanced Electron Microscopy Techniques and Applications
Publication details
- Journal / source
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Volume
- 42
- Issue
- 26
- Pages
- 18801–18809
- Publication date
- 23 June 2026
- Language
- EN