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Title:An in situ proton filter covalent organic framework catalyst for highly efficient aqueous electrochemical ammonia production
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)
.pdf Advanced_Energy_Materials_-_2023_-_Ranjeesh_-_An_In_situ_Proton_Filter_Covalent_Organic_Framework_Catalyst_for_Highly.pdf (2,77 MB)
MD5: F9CCB9A72FD8DEDCF6E71D982BE50550
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
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.
Keywords:covalent organic frameworks, ammonia, electrochemical synthesis, electrochemistry, nitrogen reduction reaction, ruthenium
Publication status:Published
Publication date:01.01.2023
Year of publishing:2023
Number of pages:str. 1-9
Numbering:Vol. , issue , [article no.] 2303068
PID:20.500.12556/RUNG-8685-2ddbcfe7-d333-c8d7-191a-a183edf2b3e7 New window
COBISS.SI-ID:176788227 New window
ISSN on article:1614-6840
DOI:10.1002/aenm.20230306 New window
Publication date in RUNG:11.12.2023
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Record is a part of a journal

Title:Advanced energy materials
Shortened title:Adv. energy mater.
COBISS.SI-ID:522022169 New window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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