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Electrocatalytic activity of CoFe1.9Mo0.1O4-Ce0.8Gd0.18Ca0.02O2-δ composite cathode for ammonia synthesis from water and nitrogen

Ibrahim A. Amar (Department of Chemistry, Faculty of Science, Sebha University, Sebha, Libya)
Mohammed M. Ahwidi (Department of Chemistry, Faculty of Science, Sebha University, Sebha, Libya)

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 26 January 2021

Issue publication date: 28 May 2021

66

Abstract

Purpose

This paper aims to investigate the electrocatalytic activity of CoFe1.9Mo0.1O4-Ce0.8Gd0.18Ca0.02O2-δ composite (CFMo-CGDC) for the direct synthesis of ammonia from H2O and N2 under atmospheric pressure.

Designs

CoFe1.9Mo0.1O4 nanoparticles (CFMo NPs) were synthesized via a sol-gel method. CFMo NPs were characterized using X-ray diffraction (XRD), Brunauer–Emmet–Teller (BET) specific surface area measurement and scanning electron microscope (SEM). Double-chamber reactor was used to synthesize ammonia using H2O and N2 as precursors. The factors affecting the ammonia formation rate (applied voltage and temperature) were studied.

Findings

CoFe1.9Mo0.1O4 nanoparticles (CFMo NPs) were synthesized via a sol-gel method. CFMo NPs were characterized using XRD, Brunauer–Emmet–Teller (BET) specific surface area measurement and SEM. Double-chamber reactor was used to synthesize ammonia using H2O and N2 as precursors. The factors affecting the ammonia formation rate (applied voltage and temperature) were studied.

Originality/value

The usage of CFMo-CGDC composite as an electrocatalyst for the synthesis of ammonia directly from H2O and N2.

Keywords

Acknowledgements

Conflict of interest: The authors have no conflicts of interest to disclose.

The authors would like to thank Professor Shanwen Tao from University of Warwick, Coventry, UK, for providing the required pieces of equipment for ammonia synthesis. The authors also thank the Department of Pure and Applied Chemistry and Chemical & Process Engineering, Strathclyde University, Glasgow, UK, for XRD, BET and SEM analysis.

Citation

Amar, I.A. and Ahwidi, M.M. (2021), "Electrocatalytic activity of CoFe1.9Mo0.1O4-Ce0.8Gd0.18Ca0.02O2-δ composite cathode for ammonia synthesis from water and nitrogen", World Journal of Engineering, Vol. 18 No. 3, pp. 490-496. https://doi.org/10.1108/WJE-07-2020-0270

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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