Multi-Functional Amorphous Nickel Phosphide Electrocatalytic Reduction of Nitrate for Ammonia Production: Unraveling the Anode-Driven Enhancement Mechanism DOI Open Access

Qiwen Yao,

Yanping Xiao,

Haoqing Wang

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(9), P. 3835 - 3835

Published: April 24, 2025

The electrocatalytic reduction of nitrate (ERN) to ammonia offers a promising route address energy shortages and environmental pollution, but its practical application is hindered by low selectivity due complex eight-electron transfer pathways high consumption (EC) from the kinetically sluggish oxygen evolution reaction (OER). This study proposes dual strategy: (1) designing multi-functional self-supported ANP electrode via vapor deposition enhance ERN activity (2) replacing OER with thermodynamically favorable anodic reactions (urea oxidation (UOR), sodium metabisulfite (S(IV)OR), sulfite urea (S(IV)/UOR)) reduce EC. cathode achieved removal rate (R%) 97.7%, (SE%) 91.8%, Faradaic efficiency (FE) 97.3% at −1.2 V, an yield 0.0616 mmol h−1 mg−1 EC 8.239 kWh/kg, while in situ-generated atomic hydrogen (*H) was identified as key improving selectivity. Replacing alternative significantly improved system efficiency: UOR reduced 17.5%, S(IV)OR saved 27.6% 7.1% higher yield, hybrid S(IV)/UOR 32.1% lower 12.6% greater than OER. These differences stemmed variations cell voltage production rates. work provides viable approach for selective nitrate-to-ammonia conversion guides design energy-efficient systems sustainable nitrogen recovery.

Language: Английский

Phosphorus–nitrogen Co-doped 3D RuCo spheres on activated carbon cloth with enhanced electrocatalytic activity for hydrogen and oxygen evolution reactions DOI
Abdulwahab Salah,

Hong‐Da Ren,

Nabilah Al‐Ansi

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 122, P. 270 - 278

Published: April 1, 2025

Language: Английский

Citations

1
Recent Advances of Ruthenium‐Based Electrocatalysts for Industrial Water Electrolyzers DOI
Wentao Zhou,

Chen Gu,

Lingbin Xie

et al.

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Hydrogen production by electrochemical water splitting is considered to be a key strategic energy technology, and proton exchange membrane electrolyzers (PEMWEs) anion (AEMWEs) are ideal technologies for green hydrogen in recent years. However, PEMWEs AEMWEs lack low‐cost high‐performance acidic oxygen evolution reaction (OER) alkaline (HER) electrocatalysts respectively, limiting their large‐scale development. Recently, ruthenium (Ru)‐based have received lot of attention because activity better than that commercial catalysts price more affordable, showing great potential OER HER. there still obstacles Ru‐based practical applications industrial electrolyzers, regulatory strategies need developed further optimize its performance. Herein, comprehensive review presented concerning it. First, fundamental principles focus the basic content application discussed. Then, summarized, providing detailed analysis elucidate mechanisms, properties, electrolyzers. Finally, outlooks prospects challenges future proposed.

Language: Английский

Citations

0
Multi-Functional Amorphous Nickel Phosphide Electrocatalytic Reduction of Nitrate for Ammonia Production: Unraveling the Anode-Driven Enhancement Mechanism DOI Open Access

Qiwen Yao,

Yanping Xiao,

Haoqing Wang

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(9), P. 3835 - 3835

Published: April 24, 2025

The electrocatalytic reduction of nitrate (ERN) to ammonia offers a promising route address energy shortages and environmental pollution, but its practical application is hindered by low selectivity due complex eight-electron transfer pathways high consumption (EC) from the kinetically sluggish oxygen evolution reaction (OER). This study proposes dual strategy: (1) designing multi-functional self-supported ANP electrode via vapor deposition enhance ERN activity (2) replacing OER with thermodynamically favorable anodic reactions (urea oxidation (UOR), sodium metabisulfite (S(IV)OR), sulfite urea (S(IV)/UOR)) reduce EC. cathode achieved removal rate (R%) 97.7%, (SE%) 91.8%, Faradaic efficiency (FE) 97.3% at −1.2 V, an yield 0.0616 mmol h−1 mg−1 EC 8.239 kWh/kg, while in situ-generated atomic hydrogen (*H) was identified as key improving selectivity. Replacing alternative significantly improved system efficiency: UOR reduced 17.5%, S(IV)OR saved 27.6% 7.1% higher yield, hybrid S(IV)/UOR 32.1% lower 12.6% greater than OER. These differences stemmed variations cell voltage production rates. work provides viable approach for selective nitrate-to-ammonia conversion guides design energy-efficient systems sustainable nitrogen recovery.

Language: Английский

Citations

0