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Boosting nitrate-to-ammonia electrocatalysis through CoP-embedded phosphide doped carbon: Unrivaled efficiency and durability

Rabia NawazNottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, 315100, ChinaSajid MahmoodLow Dimensional Materials Research Center at Khazar University, AZ1096, Baku, AzerbaijanAnum BilalNottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, 315100, ChinaShahid IqbalNottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, 315100, ChinaAli HussainSchool of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo, ChinaMuhammad SajjadLaboratory of Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, University of Nottingham Ningbo China, Ningbo, ChinaSyed Kashif AliDepartment of Physical Sciences, Chemistry Division, College of Science, Jazan University, P.O. Box. 114, Jazan, 45142, Kingdom of Saudi ArabiaFarruh AtamurotovDoniyor JumanazarovNew Uzbekistan University, Movarounnahr Street 1, Tashkent, 100000, UzbekistanSalah KnaniCenter for Scientific Research and Entrepreneurship, Northern Border University, Arar, 73213, Saudi ArabiaAli BahadurDorothy and George Hennings College of Science, Mathematics and Technology, Kean University, 1000 Morris Ave, Union, NJ, 07083, USAAbd‐ElAziem FaroukDepartment of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi ArabiaNouf M. AlyamiDepartment of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia

International Journal of Hydrogen Energyjournal2026en

ABI

Annotatsiya

There are still not many meaningful alternatives to converting too-nitrogenated water into ammonia. This is mostly because it requires highly active and long-lasting catalysts. In this paper, we obtained a catalyst that meets these requirements by producing cobalt phosphide nanoparticles in a phosphorus-doped carbon matrix via an easy pyrolysis process. The composite was deposited onto carbon paper for the composite to better operate as an electrochemical material. A thorough structural and surface analysis confirmed that the CoP particles were embedded in the carbon matrix. This created a lot of reactive sites that made it easy for charges to move quickly through the material, which in turn created a lot of active sites that made it easy for charges to move quickly through the catalyst. As a result, the material produced ammonia at a rate of 0.5 mmol h-1 mg cat −1 and had a Faradaic efficiency of 86.18 % at −1.6 V vs. SCE. Computational research further indicated that the strong interaction between CoP and the doped carbon matrix makes it easier for important intermediates to stick to the surface, lowers the energy barrier for the rate-limiting phase, and effectively stops the competing hydrogen evolution pathway. These results suggest that the CoP-PC system is a strong and useful option for getting rid of nitrate pollution and making ammonia at the same time. • CoP-PC/CP were constructed by pyrolysis and used as an electrocatalyst to reduce NO 3 − to NH 4 + . • The CoP-PC nanoparticles demonstrate outstanding performance in nitrate reduction. • Enduring stability, making CoP-PC/CP a pragmatic choice for ongoing nitrate reduction procedures. • Achieving an ammonia production rate of 0.5 mmol h −1 mg cat. −1 and a Faradaic efficiency of 86.18 % at −1.6 V versus the SCE. • Isotope labeling studies further verify that ammonia is indeed the product of nitrate reduction.

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Mavzular

Ammonia Synthesis and Nitrogen Reduction Environmental remediation with nanomaterials Metalloenzymes and iron-sulfur proteins

Identifikatorlar

DOI: 10.1016/j.ijhydene.2025.153249

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