Interfacial Synergistic Hydrogen Spillover and Electron Transfer for Boosting Electrocatalytic Nitrate Reduction to Ammonia

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 06. Okt., Seite e14834
1. Verfasser: Zheng, Muyun (VerfasserIn)
Weitere Verfasser: Wan, Yuchi, Huang, Zheng-Hong, Kang, Feiyu, Lv, Ruitao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article ammonia synthesis electron transfer hydrogen spillover interfacial synergism nitrate reduction
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520 |a Nitrate overabundance in wastewater brings environmental pollution and health risks, while the traditional Haber-Bosch process for ammonia production is accompanied by huge energy consumption and carbon emissions. Electrocatalytic nitrate reduction reaction (NO3 -RR) can use renewable energy to produce green ammonia and provide a sustainable route for wastewater treatment. Electrochemical NO3 -RR process involves multiple proton-coupled-electron steps; however, simultaneous optimization of proton and electron transfer is still challenging, leading to poor selectivity for ammonia production. Here, the interfacial synergism of hydrogen spillover and electron transfer is demonstrated to boost electrocatalytic nitrate reduction to ammonia. Experimental and theoretical calculation results show that the interface hydrogen spillover of CoNi-layered double hydroxide (LDH) accelerates the hydrogenation step of NO3 -RR, while the electron transfer to Cu2O promotes the reduction of adsorbed NO3 -. Benefitting from the interfacial synergistic hydrogen spillover and electron transfer, the CoNi-LDHCu2O catalyst achieves a remarkable Faradaic efficiency of 97.8% at -0.3 V versus RHE, and a high NH3 yield rate of 75.2 mg h-1 cm-2 at an industrial-relevant current density ≈1 A cm-2. This work provides insights into the interface design strategy to enhance NO3 -RR performance for waste nitrate treatment and green ammonia synthesis 
650 4 |a Journal Article 
650 4 |a ammonia synthesis 
650 4 |a electron transfer 
650 4 |a hydrogen spillover 
650 4 |a interfacial synergism 
650 4 |a nitrate reduction 
700 1 |a Wan, Yuchi  |e verfasserin  |4 aut 
700 1 |a Huang, Zheng-Hong  |e verfasserin  |4 aut 
700 1 |a Kang, Feiyu  |e verfasserin  |4 aut 
700 1 |a Lv, Ruitao  |e verfasserin  |4 aut 
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773 1 8 |g year:2025  |g day:06  |g month:10  |g pages:e14834 
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