Publication date: 15th December 2025
Nitrogen-doped carbon materials have attracted significant interest as metal-free electrocatalysts. Compared to metal-based materials, carbon-based materials are cost-effective, environmentally friendly, and highly versatile. Nitrogen doping can modify the intrinsic properties of carbon-based materials by altering the local electronic structure, therefore influencing the adsorption energy of reaction intermediates on the catalyst surface. However, this nitrogen doping may result in various nitrogen configurations within the structure. Consequently, each nitrogen configuration alters the electronic structure and adsorption properties of the material, thus affecting its catalytic performance. To date, there is no consensus on which nitrogen configuration governs a given reaction, largely because most synthesis methods inherently produce a mixture of N configurations. The key challenge is therefore to synthesize electrocatalysts containing only one type of nitrogen to elucidate the structure-activity-selectivity relationships.
In this work, we investigate well-defined carbon-based nanomaterials for electrocatalytic oxidation reactions. We focus on monolayer N-doped graphene nanoribbons (N-GNR) containing only bi-pyridinic nitrogen functions distributed periodically, prepared using an on-surface synthesis technique. The stability of the N-GNRs constitutes the first stage of this study and is currently being evaluated in a standard three-electrode cell in acidic media and characterized with Raman spectroscopy.
We acknowledge ERC Consolidator Grant “ATOMISTIC”. Grant agreement ID: 101045778.
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