TY - JOUR
T1 - Construction of 2D CoFe-MOF derived from LDH electrocatalyst for efficient oxygen and urea evolution
AU - Yuan, Aojie
AU - Du, Jianhao
AU - Zheng, Yang
AU - Liu, Huan
AU - Zhang, Haojun
AU - Li, Honglei
AU - Chen, Long
N1 - Publisher Copyright:
© 2025 Elsevier Inc.
PY - 2025/4/15
Y1 - 2025/4/15
N2 - 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.
AB - 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.
KW - Layered double hydroxides
KW - Metal–organic frameworks
KW - Oxygen evolution reaction
KW - Template method
KW - Terephthalic acid
UR - http://www.scopus.com/inward/record.url?scp=85215398712&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2025.01.115
DO - 10.1016/j.jcis.2025.01.115
M3 - Article
AN - SCOPUS:85215398712
SN - 0021-9797
VL - 684
SP - 243
EP - 250
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -