| Title: | An in situ proton filter covalent organic framework catalyst for highly efficient aqueous electrochemical ammonia production |
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| Authors: | ID Ranjeesh, Kayaramkodath C. (Author)
ID Kaur, Sukhjot (Author)
ID Mohammed, Abdul K. (Author)
ID Gaber, Safa (Author)
ID Gupta, Divyani (Author)
ID Badawy, Khaled (Author)
ID Aslam, Mohamed (Author)
ID Singh, Nirpendra (Author)
ID Škorjanc, Tina (Author)
ID Finšgar, Matjaž (Author) |
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| Files: |  https://onlinelibrary.wiley.com/doi/10.1002/aenm.202303068
 Advanced_Energy_Materials_-_2023_-_Ranjeesh_-_An_In_situ_Proton_Filter_Covalent_Organic_Framework_Catalyst_for_Highly.pdf (2,77 MB)
MD5: F9CCB9A72FD8DEDCF6E71D982BE50550
https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202303068
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The electrocatalytic nitrogen reduction reaction (NRR) driven by renewable electricity provides a green synthesis route for ammonia (NH3) production under ambient conditions but suffers from a low conversion yield and poor Faradaic efficiency (F.E.) because of strong competition from hydrogen evolution reaction (HER) and the poor solubility of N2 in aqueous systems. Herein, an in situ proton filter covalent organic framework catalyst (Ru-Tta-Dfp) is reported with inherent Ruthenium (Ru) sites where the framework controls reactant diffusion by suppressing proton supply and enhancing N2 flux, causing highly selective and efficient catalysis. The smart catalyst design results in a remarkable ammonia production yield rate of 2.03 mg h−1 mgcat−1 with an excellent F.E. of ≈52.9%. The findings are further endorsed with the help of molecular dynamics simulations and control COF systems without in situ proton filter feasibility. The results point to a paradigm shift in engineering high-performance NRR electrocatalysts for more feasible green NH3 production. |
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| Keywords: | covalent organic frameworks, ammonia, electrochemical synthesis, electrochemistry, nitrogen reduction reaction, ruthenium |
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| Publication status: | Published |
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| Publication date: | 01.01.2023 |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-9 |
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| Numbering: | Vol. 14, issue 5, [article no.] 2303068 |
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| PID: | 20.500.12556/RUNG-8685-2ddbcfe7-d333-c8d7-191a-a183edf2b3e7  |
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| COBISS.SI-ID: | 176788227 |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 1614-6840 |
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| DOI: | 10.1002/aenm.20230306 |
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| NUK URN: | URN:SI:UNG:REP:UHPBPDXS |
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| Publication date in RUNG: | 11.12.2023 |
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| Views: | 1563 |
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| Downloads: | 8 |
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