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CoCuSiB Nanocrystalline for Efficient Nitrate-to-Ammonia Electroreduction.

Tong Liu1,2, Boran Yang1, Keqi Li1

  • 1Key Laboratory of Advanced Structural Materials, Ministry of Education, College of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 13, 2026
PubMed
Summary
This summary is machine-generated.

A novel nanocrystalline alloy catalyst (Co60Cu12Si18B10) enhances electrocatalytic nitrate reduction, offering efficient ammonia synthesis and wastewater treatment with high yield and stability.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Environmental Science

Background:

  • Electrocatalytic nitrate reduction reaction (NO3RR) is a promising dual-purpose technology for ammonia synthesis and wastewater remediation.
  • Current NO3RR applications are limited by insufficient electrocatalytic activity and long-term stability.

Purpose of the Study:

  • To develop a highly active and stable electrocatalyst for NO3RR.
  • To investigate the structure-property relationships of novel nanocrystalline alloys for enhanced electrocatalysis.

Main Methods:

  • Fabrication of a Co60Cu12Si18B10 nanocrystalline alloy using nonequilibrium solidification.
  • Characterization of the alloy's unique Cu-CoSiB dual nanocrystalline structure.
  • Evaluation of the catalyst's performance in electrocatalytic nitrate reduction.

Main Results:

  • The Co60Cu12Si18B10 catalyst exhibited a high NH3 yield rate of 9.11 mg h-1 cm-2 and a Faradaic efficiency of 96.4%.
  • The addition of Si and B elements refined the structure and modulated electronic properties of active sites.
  • The catalyst demonstrated superior performance compared to most previously reported catalysts.

Conclusions:

  • Nonmetallic alloyed nanocrystals are effective for highly efficient electrocatalysis.
  • The developed Co60Cu12Si18B10 catalyst shows significant potential for sustainable ammonia production and environmental wastewater treatment.