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PreprintCC BYChemRxiv

Iron Tetraphenylporphyrin for Electrocatalytic AmmoniaOxidation in Solution and Carbon-Supported Films

  • Nikolaos Kostopoulos1,2
  • Ziwen Zhao1,2
  • Luca D'Amario1,2
  • Alina Sekretareva1,2
  1. 1Department of Chemistry- Ångström
  2. 2Uppsala University
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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.

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Cite

BibTeXRIS
BibTeX
@misc{kostopoulos2026iron,
  title = {{Iron Tetraphenylporphyrin for Electrocatalytic AmmoniaOxidation in Solution and Carbon-Supported Films}},
  author = {Nikolaos Kostopoulos and Ziwen Zhao and Luca D'Amario and Alina Sekretareva},
  howpublished = {ChemRxiv},
  year = {2026},
  month = oct,
  doi = {10.26434/chemrxiv.15010301/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010301/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Iron Tetraphenylporphyrin for Electrocatalytic AmmoniaOxidation in Solution and Carbon-Supported Films
AU  - Nikolaos Kostopoulos
AU  - Ziwen Zhao
AU  - Luca D'Amario
AU  - Alina Sekretareva
PY  - 2026
DA  - 2026/10/12
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15010301/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010301/v1
AB  - 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.
ER  -