Nitrogen‐Rich MOF‐Material‐Derived Metal Dual‐Atom Platforms for Efficient Electrochemical Nitrate Reduction

Abstract The rational design of asymmetrically coordinated dual‐atom catalysts (DACs) offers new opportunities to overcome intrinsic limitations in selective multi‐electron electrochemical reactions. Here, we present a general synthetic strategy that exploits high‐energy metal‐organic frameworks (EMOFs, such as nitrogen‐rich MOFs) as versatile precursors to construct a diverse library of atomically dispersed and structurally asymmetric DACs. By leveraging the exothermic decomposition and gas‐releasing nature of Zn‐based EMOFs such as Zn(C 2 H 2 N 3 ) 2 (1,2,3‐triazolate, MET‐6), we achieve the in situ formation of porous nitrogen‐doped carbon frameworks embedding various Zn─M (M = Co, Fe, Mn, Pd, Pt, Ni, Ru) dual‐atom sites with tailored asymmetric coordination environments. This far‐from‐equilibrium route enables atomic dispersion while steering the formation of non‐centrosymmetric metal sites that are otherwise challenging to access via conventional thermal treatments. Across the DACs library, the Zn─Co/NC member stands out for electrochemical nitrate reduction (NO 3 RR), delivering a Faradaic efficiency of 98.95% toward NH 3 at −0.4 V. In situ X‐ray absorption spectroscopy (XAS) and density functional theory calculations reveal that the asymmetric N 3 Zn─CoN 2 configuration enhances electronic coupling between the two metal centers, optimizes *NOH adsorption, and lowers the activation barrier for key intermediates. This work establishes a broadly applicable route to asymmetric DACs and provides a platform for tailoring active‐site configurations to diverse electrochemical transformations.

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Publication Details

Journal
Angewandte Chemie
Published
2025-10-11
DOI
https://doi.org/10.1002/ange.202517259
Primary Topic
Ammonia Synthesis and Nitrogen Reduction
Type
article
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article

Nitrogen‐Rich MOF‐Material‐Derived Metal Dual‐Atom Platforms for Efficient Electrochemical Nitrate Reduction

Yuhai Dou, Dengyu Chen, Zihao Wei, Ziwei Deng et al.
Angewandte Chemie
Ammonia Synthesis and Nitrogen Reduction
article

Nitrogen‐Rich MOF‐Material‐Derived Metal Dual‐Atom Platforms for Efficient Electrochemical Nitrate Reduction

Yuhai Dou, Dengyu Chen, Zihao Wei, Ziwei Deng, Ziheng Zhan, H. R. Qi, Mingyue Li, Bin Liu, Xuan Xie, Chen Li, Liping Wang, Wenxing Chen, Li Li, Zhiyi Sun, Jian Wei
article en

Abstract

Abstract The rational design of asymmetrically coordinated dual‐atom catalysts (DACs) offers new opportunities to overcome intrinsic limitations in selective multi‐electron electrochemical reactions. Here, we present a general synthetic strategy that exploits high‐energy metal‐organic frameworks (EMOFs, such as nitrogen‐rich MOFs) as versatile precursors to construct a diverse library of atomically dispersed and structurally asymmetric DACs. By leveraging the exothermic decomposition and gas‐releasing nature of Zn‐based EMOFs such as Zn(C 2 H 2 N 3 ) 2 (1,2,3‐triazolate, MET‐6), we achieve the in situ formation of porous nitrogen‐doped carbon frameworks embedding various Zn─M (M = Co, Fe, Mn, Pd, Pt, Ni, Ru) dual‐atom sites with tailored asymmetric coordination environments. This far‐from‐equilibrium route enables atomic dispersion while steering the formation of non‐centrosymmetric metal sites that are otherwise challenging to access via conventional thermal treatments. Across the DACs library, the Zn─Co/NC member stands out for electrochemical nitrate reduction (NO 3 RR), delivering a Faradaic efficiency of 98.95% toward NH 3 at −0.4 V. In situ X‐ray absorption spectroscopy (XAS) and density functional theory calculations reveal that the asymmetric N 3 Zn─CoN 2 configuration enhances electronic coupling between the two metal centers, optimizes *NOH adsorption, and lowers the activation barrier for key intermediates. This work establishes a broadly applicable route to asymmetric DACs and provides a platform for tailoring active‐site configurations to diverse electrochemical transformations.

Angewandte ChemieVol. 137(49)
Beijing Institute of Technology (CN), University of Shanghai for Science and Technology (CN), Nanjing Forestry University (CN), Beijing University of Technology (CN), Chinese Research Academy of Environmental Sciences (CN), Northwest Normal University (CN), Beijing University of Chemical Technology (CN)
Openalex Percentile: Top 83%
Ammonia Synthesis and Nitrogen Reduction
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