Iron Tetraphenylporphyrin for Electrocatalytic AmmoniaOxidation in Solution and Carbon-Supported Films
Year: 2026
Type: preprint
Abstract: Ammonia has recently attracted significant attention as a green fuel for fuel cells due to its advantages over hydrogen.Electrochemical ammonia oxidation has traditionally relied on noble metal catalysts such as Pt.However, scarcity and poisoning issues have motivated the exploration of molecular complexes as alternatives.Herein, we report iron tetraphenylporphyrin, Fe(TPP)Cl, as catalyst for electrochemical ammonia oxidation reaction (eAOR), both in homogeneous conditions, in dichloromethane (DCM) solutions, and incorporated in carbon black, in acetonitrile (ACN) solutions.Catalytic activity in homogeneous conditions is demonstrated by cyclic voltammetry whereas surface incorporation of the catalyst into catalytic films is confirmed by resonance Raman spectroscopy and cyclic voltammetry.It is a rare example of a non-noble metal, hybrid molecular catalysis for ammonia oxidation reaction.
Source: ChemRxiv
Institution: Uppsala University
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7221697776