Iron-doped novel Co-based metal–organic frameworks for preparation of bifunctional catalysts with an amorphous structure for OER/HER in alkaline solution

Abstract

A novel two-dimensional Co-MOF material {[Co(dptz)2(oba)2]·(DMF)2}n is prepared by using mixed organic ligands, which exhibits both OER (oxygen evolution reaction) and HER (hydrogen evolution reaction) catalytic performance. The integration of...

Microenvironment Regulation of Metal–Organic Frameworks to Anchor Transition Metal Ions for the Electrocatalytic Hydrogen Evolution Reaction

“…A less blue shift in N 1s binding energy observed from Zr L3 to Zr L3 -TM when compared with other analogues suggests that the increase in the electron density of TM centers is smaller and hence binding energies of TM 2p signals should be more positive in Zr L3 -TM than other counterparts. Unexpectedly, the Co and Ni 2p signals of Zr L1 -TM, Zr L2 -TM, and Zr L3 -TM are comparable (Co 2p signals: 781.51–797.36 eV; Ni 2p signals: 856.21–874.52 eV; Figures S31, S32, S34, Table S4; both sets of peaks match well those reported in the literature − ). The richer electron density of the TM center in Zr L3 -TM probably originates from the S-pendants, where S atoms donate electrons to TM centers via TM–S bond formation.…”

Interfacial engineering and chemical reconstruction of Mo/Mo2C@CoO@NC heterostructure for promoting oxygen evolution reaction

“…The goals of carbon neutrality and carbon peaking have also continuously promoted the research of clean energy. [5][6][7] Among them, hydrogen energy, H 2 , has become the ultimate energy source in the 21st century due to its high energy density, greenness, and net-zero carbon emissions. 8,9 Among various hydrogen production technologies, electrochemical water splitting has attracted much attention due to its high purity, wide sources, and high efficiency.…”

Advances and Outlook of Metal–Organic Frameworks as High-Performance Electrocatalysts for Hydrogen Evolution Reaction: A Minireview

“…The researchers found that the initial activity of the MOF catalyst was moderate, with an overpotential of 530 mV, and the Tafel slope was 69.0 mV• dec −1 ; however, controlled potential electrolysis resulted in a faster activation process and a more active material, which showed a 200 mV decrease in catalytic initiation and overpotential required to reach 10 mA•cm −2 . In a different research, Zhang et al 63 88 synthesized an innovative 2D Co-MOF By employing mixed organic ligands. The researchers used an Fedoping approach to enhance its HER electrocatalytic activity for water splitting.…”