Construction of 2D CoFe-MOF derived from LDH electrocatalyst for efficient oxygen and urea evolution

Aojie Yuan, Jianhao Du, Yang Zheng, Huan Liu, Haojun Zhang, Honglei Li, Long Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Two-dimensional metal–organic framework (2D MOF) materials have significant development prospects in the technology of urea-assisted water electrolysis for hydrogen production. However, the poor conductivity, low mass permeability, and stability have limited their development in electrocatalysis. Here, CoFe-BDC is synthesized using layered double hydroxides (LDH) as the template. The effect of different ligands of CoFe-MOF on the microstructure and electrocatalytic performance is systematically investigated. Terephthalic acid has the weakest destructive ability and strongest coordination ability due to its high symmetry in spatial structure and its weakest acidity than other ligands, leading to the production of massive active sites. CoFe-BDC has the best electrocatalytic activity (oxygen evolution reaction (OER): η100 = 258 mV, urea oxidation reaction (UOR): η100 = 1.34 V, overall water splitting (OWS): E100 = 1.76 V). CoFe-BDC is observed to undergo a catalytic transformation to FeOOH at a reconstruction voltage of 1.4 V via in situ Fourier transform infrared spectroscopy and Raman spectroscopy. This study provides a new approach of 2D MOFs materials using template method for water electrolysis.

Original languageEnglish
Pages (from-to)243-250
Number of pages8
JournalJournal of Colloid and Interface Science
Volume684
DOIs
Publication statusPublished - 15 Apr 2025
Externally publishedYes

Keywords

  • Layered double hydroxides
  • Metal–organic frameworks
  • Oxygen evolution reaction
  • Template method
  • Terephthalic acid

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Yuan, A., Du, J., Zheng, Y., Liu, H., Zhang, H., Li, H., & Chen, L. (2025). Construction of 2D CoFe-MOF derived from LDH electrocatalyst for efficient oxygen and urea evolution. Journal of Colloid and Interface Science, 684, 243-250. https://doi.org/10.1016/j.jcis.2025.01.115