Integrating Coordination Structure and Adsorption Energetics in Electrocatalytic Active-Site Design: Traceable Workflows and Comparative Validation
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Keywords

Electrocatalytic Active-Site Design
Coordination Structure
Adsorption Energetics
Selectivity
Operando Evidence
Durability

Abstract

The literature on electrocatalytic active-site design contains a recurring tension between methodological novelty and evidential comparability. By reading cooperative atomically dispersed Fe-N4 and Sn-Nx coordination sites for oxygen reduction alongside chalcogenide-anion regulation of Ni2Mo6Te8 stability and nitrate-to-ammonia selectivity, this article clarifies the conditions under which their conclusions can support a common research argument. Two target papers are triangulated against 12 locally validated publications. The comparison follows coordination structure, adsorption energetics, selectivity, operando evidence, durability and deliberately separates mechanistic interpretation from performance ranking, because the latter can conceal incompatible experimental or operational conditions. Comparison reveals recurring trade-offs among coordination structure, adsorption energetics, and selectivity. These trade-offs do not support a universal ranking; instead, they identify the operating envelope within which each method remains credible and the perturbations most likely to expose fragile conclusions. The article concludes with a research agenda built around transparent comparators, targeted stress tests, and evidence records that can be reused without overstating causal or practical reach.

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References

Xia, F., Li, B., An, B., Zachman, M. J., Xie, X., Liu, Y., Xu, S., Saha, S., Wu, Q., Gao, S., Abdul Razak, I. B., Brown, D. E., Ramani, V., Wang, R., Marks, T. J., Shao, Y., & Cheng, Y. (2024). Cooperative Atomically Dispersed Fe–N4 and Sn–Nx Moieties for Durable and More Active Oxygen Electroreduction in Fuel Cells. Journal of the American Chemical Society, 146(49), 33569-33578. https://doi.org/10.1021/jacs.4c11121

Xia, F., Li, B., Liu, Y., Tan, H., An, B., Gao, S., Marks, T. J., & Cheng, Y. (2024). Critical Roles of Chalcogenide Anion on Strengthening Stability of Ni2Mo6Te8 for Almost Exclusive Electrocatalysts Nitrate to Ammonia Conversion. Advanced Functional Materials, 34(14), 2312079.

Zhao, X., Geng, Q., Dong, F., Zhao, K., Chen, S., Yu, H., et al. (2023). Boosting the selectivity and efficiency of nitrate reduction to ammonia with a single-atom Cu electrocatalyst. Chemical Engineering Journal, 466, 143314. https://doi.org/10.1016/j.cej.2023.143314

Yin, S., & Wang, Y. (2025). Single-Atom Catalysts for Electrochemical Nitrate Reduction to Ammonia: Rational Design, Mechanistic Insights, and System Perspectives. Catalysts, 15(11), 1084. https://doi.org/10.3390/catal15111084

Niu, Z., & Wang, G. (2025). Rational electrocatalyst design for selective nitrate reduction to ammonia. Chemical Physics Reviews, 6(1). https://doi.org/10.1063/5.0230248

Mo, Z., Mu, J., & Liu, B. (2024). Transition metal single-atom electrocatalytic reduction catalyst for nitrate to ammonia. Journal of Electroanalytical Chemistry, 969, 118533. https://doi.org/10.1016/j.jelechem.2024.118533

Chen, X., Ji, X., & Kou, J. (2023). Rational design of iron single-atom catalysts for electrochemical nitrate reduction to produce ammonia. Discover Chemical Engineering, 3(1). https://doi.org/10.1007/s43938-023-00038-1

Liu, G., & Hao, C. (2025). Theoretical Calculations on Hexagonal-Boron-Nitride-(h-BN)-Supported Single-Atom Cu for the Reduction of Nitrate to Ammonia. Molecules, 30(24), 4700. https://doi.org/10.3390/molecules30244700

Rivera, D., Gupta, S., & Muhich, C. L. (2024). (Invited) Fundamentals of Single Atom Alloy Catalysts for Electrochemical Nitrate Reduction to Ammonia. ECS Meeting Abstracts, MA2024-01(39), 2316-2316. https://doi.org/10.1149/ma2024-01392316mtgabs

Yang, D., Li, Y., & Han, G. (2021). Single-atom Fe-N-G as an efficient electrocatalyst for oxygen reduction reaction. Journal of Electroanalytical Chemistry, 892, 115271. https://doi.org/10.1016/j.jelechem.2021.115271

Chao, G., Wang, J., Zong, W., Fan, W., Xue, T., Zhang, L., et al. (2024). Single‐atom catalysts for electrocatalytic nitrate reduction into ammonia. Nanotechnology, 35(43), 432001. https://doi.org/10.1088/1361-6528/ad64d9

Yin, H., Peng, Y., & Li, J. (2023). Electrocatalytic Reduction of Nitrate to Ammonia via a Au/Cu Single Atom Alloy Catalyst. Environmental Science & Technology, 57(8), 3134-3144. https://doi.org/10.1021/acs.est.2c07968

Zhao, M., Gan, G., & Zhang, Q. (2022). Different Bonding Defects on Dual‐Metal Single‐Atom Electrocatalyst CoZnN 6 (OH) for Oxygen Reduction Reaction. ChemPhysChem, 23(8). https://doi.org/10.1002/cphc.202100902

Yan, J., Xu, H., Chang, L., Lin, A., & Cheng, D. (2022). Revealing the pH-dependent mechanism of nitrate electrochemical reduction to ammonia on single-atom catalysts. Nanoscale, 14(41), 15422-15431. https://doi.org/10.1039/d2nr02545k

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Copyright (c) 2026 Brett Fowler, Bryce Mercer, Carson Benson (Author)