High-Efficiency Electrochemical Ammonia Synthesis at Co-Catalytic Fe–Mo Dual-Atom Sites DOI
Ruonan Li,

Runlin Ma,

Lili Zhang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

To tackle the challenge in electrochemical nitrogen fixing and reduction aqueous electrolytes, conventional approach has been to suppress competitive hydrogen evolution reaction. Nonetheless, proton provision is a crucial step pathway produce ammonia, single active site faces daunting task striking balance between high fixation efficiency fast protonation kinetics. This work presents harmonic strategy featuring atomically dispersed dual Fe-Mo sites anchored an N-doped carbon (FeMoNC) substrate, where low-spin Fe center with enriched empty d orbitals aids activation, adjacent Mo accelerates kinetics of N-containing intermediates at via distal associative mechanism. Driven by this co-catalytic mechanism, FeMoNC catalyst achieves Faradaic 37.42%, marking significant improvement 7.8- 10.6-fold over or single-atom catalysts, respectively. Furthermore, excellent NH3 yield 54.40 μg h-1 mgcat.-1 realized flow cell enhancing mass transfer. study provides valuable insights into diatomic mechanisms for ammonia synthesis.

Language: Английский

Dual-Enzyme-Mimicking Sites in Covalent Organic Frameworks Enable Highly Efficient Relay Electrosynthesis of Ammonia DOI Creative Commons
Si‐Wen Ke, Yang Lv, Yuming Gu

et al.

JACS Au, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Language: Английский

Citations

0
High-Efficiency Electrochemical Ammonia Synthesis at Co-Catalytic Fe–Mo Dual-Atom Sites DOI
Ruonan Li,

Runlin Ma,

Lili Zhang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

To tackle the challenge in electrochemical nitrogen fixing and reduction aqueous electrolytes, conventional approach has been to suppress competitive hydrogen evolution reaction. Nonetheless, proton provision is a crucial step pathway produce ammonia, single active site faces daunting task striking balance between high fixation efficiency fast protonation kinetics. This work presents harmonic strategy featuring atomically dispersed dual Fe-Mo sites anchored an N-doped carbon (FeMoNC) substrate, where low-spin Fe center with enriched empty d orbitals aids activation, adjacent Mo accelerates kinetics of N-containing intermediates at via distal associative mechanism. Driven by this co-catalytic mechanism, FeMoNC catalyst achieves Faradaic 37.42%, marking significant improvement 7.8- 10.6-fold over or single-atom catalysts, respectively. Furthermore, excellent NH3 yield 54.40 μg h-1 mgcat.-1 realized flow cell enhancing mass transfer. study provides valuable insights into diatomic mechanisms for ammonia synthesis.

Language: Английский

Citations

0