Horizon Europe - GrInShield Project - Twinning for new graphene based composites in electromagnetic interference shielding (No. 101079151)
Published 2026 | Version v1
Journal article Open

Synergistic effect of gamma irradiation and nitrogen doping on graphene oxide for EMI shielding

Authors/Creators

  • 1. Vinca Institute of Nuclear Sciences, University of Belgrade
  • 2. Vinča Institute of Nuclear Sciences
  • 3. ROR icon Carl von Ossietzky Universität Oldenburg
  • 4. ROR icon Institut de Ciència de Materials de Barcelona
  • 5. ROR icon University of Belgrade - Faculty of Physical Chemistry
  • 6. Vinca Institute of Nuclear Sciences

Contributors

Project leader:

  • 1. Vinca Institute of Nuclear Sciences

Description

In this study, we integrated the radiolytic reduction of graphene oxide (GO) with ammonolysis treatments, using pure ammonia gas, to synthesize nitrogen-doped radiolytically reduced GO (N-γGO), which is proposed as a promising candidate for an effective electromagnetic interference (EMI) shielding material with minimal thickness. We examined the correlation between the temperature of treatment, specifically 500 and 800 °C, and the amount of nitrogen present in the samples. With this approach, we were able to synthesize N-γGO samples with up to 12.6 wt% N, the highest N content being obtained in the samples treated at the lower annealing temperature. The annealed samples demonstrated enhanced thermal stability and a reduced level of functionalization compared to both pristine and irradiated GO. Furthermore, their EMI shielding performance, evaluated in the X-band frequency range, was significantly superior to that of GO. Notably, the samples annealed at 500 and 800 °C attenuated 99.1% and 96.6% of the incident electromagnetic waves, respectively. While the contribution of mismatch loss to the overall shielding effectiveness was moderate, dissipation loss had the most substantial impact.

Notes (English)

This is the peer-reviewed version of the article: Milenković, M., Kepić, D., Yasir, M., Saeed, W., Tobías-Rossell, G., Sandoval, S., ... & Jovanović, S. (2026). Synergistic effect of gamma irradiation and nitrogen doping on graphene oxide for EMI shielding. Ceramics International. https://doi.org/10.1016/j.ceramint.2026.03.195

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Additional details

Related works

Has version
Journal article: https://vinar.vin.bg.ac.rs/handle/123456789/16716 (URL)
Is version of
Journal article: 10.1016/j.ceramint.2026.03.195 (DOI)
Journal article: 10.5281/zenodo.17356964 (DOI)
Dataset: 10.5281/zenodo.17356964 (DOI)

Funding

European Commission
GrInShield - TWINNING FOR NEW GRAPHENE-BASED COMPOSITES IN ELECTROMAGNETIC INTERFERENCE SHIELDING 101079151

Dates

Accepted
2025-03-16