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- Title
Electrocatalytic Reduction of Nitrogen to Ammonia Using Tiara‐like Phenylethanethiolated Nickel Cluster.
- Authors
Maman, Manju P.; Gurusamy, Tamilselvi; Pal, Arun K.; Jana, Rajkumar; Ramanujam, Kothandaraman; Datta, Ayan; Mandal, Sukhendu
- Abstract
The fixing of N2 to NH3 is challenging due to the inertness of the N≡N bond. Commercially, ammonia production depends on the energy‐consuming Haber‐Bosch (H−B) process, which emits CO2 while using fossil fuels as the sources of hydrogen and energy. An alternative method for NH3 production is the electrochemical nitrogen reduction reaction (NRR) process as it is powered by renewable energy sources. Here, we report a tiara‐like nickel‐thiolate cluster, [Ni6(PET)12] (where, PET=2‐phenylethanethiol)] as an efficient electro‐catalyst for the electrochemical NRR at ambient conditions. Ammonia (NH3: 16.2±0.8 μg h−1 cm−2) was the only nitrogenous product over the potential of −2.3 V vs. Fc+/Fc with a Faradaic efficiency of 25%±1.7. Based on theoretical calculations, NRR by [Ni6(PET)12] proceeds through both the distal and alternating pathways with an onset potential of −1.84 V vs. RHE (i.e., −2.46 V vs. Fc+/Fc) which corroborates with the experimental findings.
- Subjects
RENEWABLE energy sources; HYDROGEN as fuel; AMMONIA; NITROGEN; FOSSIL fuels; ELECTROLYTIC reduction; NICKEL
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 27, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202305462