Chinese Journal of Catalysis ›› 2026, Vol. 90: 82-116.DOI: 10.1016/S1872-2067(26)65185-6

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Advancing metal cluster-based electrocatalysis for C-N synthesis: Fundamental, design strategies, and applications

Irshad Ahmada,b, Shasha Wanga,*(), Mohammed Qasem Alfaific, Yousef I. Alrashedd, Fahad M. Albaqid, Gao Lia,*()   

  1. a College of Chemistry and Environmental Science, Inner Mongolia Normal University, Hohhot 010022, Inner Mongolia, China
    b Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan
    c Hydrogen Technologies Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
    d Refining Technologies and Petrochemicals Institute (RTPI), King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
  • Received:2026-01-21 Accepted:2026-03-20 Online:2026-11-05 Published:2026-09-09
  • About author:Shasha Wang (Inner Mongolia Normal University) received his B.A. degree from Inner Mongolia University of Technology (China, 2011), Master from Dalian Maritime University (2013) and Ph.D. from Inner Mongolia University (China, 2018). And then she joined Inner Mongolia Normal University as a Associate Professor. Her current research interests include the controlled synthesis of nanomaterials (e.g. rare-earth upconversion luminescent materials) and their applications in energy catalysis. She has published > 10 peer-reviewed papers and granted 2 authorized patents.
    Gao Li (Inner Mongolia Normal University) received his B.A. degree from Hunan Normal University (China) in 2004, and Ph.D. degree from Shanghai Jiaotong University (China) in 2011. He carried out postdoctoral research at Carnegie Mellon University (USA. 2011 to 2014). And then he worked for State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences from 2014 to 2025. After that he joined Inner Mongolia Normal University. His current research interests focused on the preparation and application of gold clusters. His research interests mainly focus on (i) Synthesis and application of metal nanoclusters: structure-composition-function correlations, and (ii) Functionalization of metal nanoclusters for emerging deployments: structure-activity correlation structure-performance relationship. He has published over 200 peer-reviewed papers.
    First author contact:

    Irshad Ahmad: Writing-original draft, review and editing manuscript. Shasha Wang: Writing - original draft, validation. Qasem Alfaifi: Review and editing manuscript. Yousef I. Arashed: Review and editing manuscript. Fahad M. Albaqi: Review and editing manuscript. Gao Li: Conceptualization, funding acquisition, Writing - review.

  • Supported by:
    National Natural Science Foundation of China(22065029)

Abstract:

The escalating demand for sustainable nitrogen-containing chemicals calls for transformative electrocatalytic strategies that can precisely orchestrate C-N bond formation. Atomically defined metal nanoclusters have emerged as a frontier in electrocatalysis, enabling the direct synthesis of chemicals via C-N coupling. Their discrete electronic structures and tunable ligand environments permit atomic-level control over adsorption, activation, and proton-electron transfer dynamics, overcoming the intrinsic kinetic and thermodynamic challenges of multi-electron C-N coupling reactions. Here, we present a comprehensive overview of cluster-based electrocatalysts, encompassing cluster properties, synthetic routes, mechanistic insights, performance descriptors critical for evaluating catalytic efficiency, and their applications in the synthesis of urea, ammonia, amines, amides, oximes, and amino acids. We focus on the correlations between cluster composition, size, and local coordination in dictating product distribution and catalytic durability. Finally, we identify current bottlenecks in stability, scalability, and industrial integration, and propose rational design principles for engineering next-generation clusters to achieve sustainable, high-value nitrogen chemical production. This review frames a roadmap for exploiting atomic precision in electrocatalysis, charting a path toward transformative C-N bond-forming technologies.

Key words: Electrocatalyst, Metal clusters, C-N coupling, Synthesis methods, Faradic efficiency