2D Covalent organic framework promotor to boost electrocatalytic carbon dioxide reduction (2D-PROM)

• Applicant: Dr. Paul Maurice Leidinger
• Subject Area: Physical Chemistry of Solids and Surfaces, Material Characterisation
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 568869683

The goal of the 2D-PROM project is to create an atomically defined, two-dimensional covalent organic framework (2D-COF) on an electrocatalytic metal substrate, acting as a surface activity promotor for the carbon dioxide reduction reaction to carbon monoxide in acidic conditions and independent of the electrolyte ions. The industrial-scale implementation of electrochemical carbon dioxide valorization is not yet feasible due to remaining challenges. For the reduction to carbon monoxide, the ideal combination of catalyst, electrolyte, and reaction pH is still to be found. To address this issue, I want to perform a study combining a model catalytic system with a fundamental electrochemistry and surface science approach. I intend to create a catalytic structure consisting of a metal (silver) substrate covered by an atomically thin 2D COF layer with pH-dependent protonated imine groups. This system is expected to show a high activity towards the electrochemical carbon dioxide reduction reaction. This is achieved by stabilizing the main reaction intermediate while suppressing the hydrogen evolution reaction. Each individual structure (metal or 2D-COF) presumably shows low activity under the conditions relevant for industrial carbon dioxide valorization, namely in acidic environment and in the absence of metallic electrolyte cations. The contrast between the individually inactive and combined active co-catalysts creates a model system that can be tuned to maximize the reaction selectivity, but also provides fundamental insights into electrocatalytic activity and stability using a model-type molecular surface network. This interdisciplinary project merges experience of the scholar and the host institution to form a new scientific case, which is scientifically and industrially relevant and will mark the start of an independent academic career.

• DFG Programme: WBP Fellowship
• International Connection: Denmark
• Host: Professor Dr. Jeppe Vang Lauritsen, Ph.D.