Theoretical study of radon adsorption on doped graphene for environmental safety applications

Radon (Rn) detection is vital for environmental safety, yet the development of highly effective sensing materials remains a challenge. This paper employs DFT to study Rn adsorption on doped graphene structures: Be-Graphene, P-Graphene, Si-Graphene, and S-Graphene. The findings indicate that Be-Graphene interacts the strongest and transfers the most charges, making this material a prime candidate for radon adsorption, especially in the presence of an electric field. In doing so, Be-Graphene is set to introduce promising advancements in radon sensing and remediation. This work supplies the theoretical basis for tuning graphene-based materials for gas sensing applications toward the next generation of environmental monitoring technologies.