Carboxyferrocene modulated Ni/Co bimetallic metal-organic framework for highly efficient electrocatalysis of urea oxidation reaction

A NiMOF integrated with conductive materials for efficient bifunctional electrocatalysis of urea oxidation and oxygen evolution reactions

“…The peaks located near 862 and 880 eV were assigned to shake-up satellites of Ni 2p 3/2 and Ni 2p 1/2 . 23 As displayed in Fig. 2d, the Ni 2p 3/2 binding energies for MWCNT–NiMOF and MWCNT–NiMOF(Fc) decreased by 0.22 eV and 0.57 eV, respectively, compared to that of the NiMOF.…”

“…4a shows the LSV curves of MWCNT–NiMOF(Fc)/GCE in KOH solutions with and without urea. In 1.0 mol L −1 KOH, an oxidation peak starting at 1.364 V was observed, which corresponded to the oxidation reaction of Ni 2+ species to Ni 3+ species ([Ni 3 (OH) 2 (C 8 H 4 O 4 ) 2 ·(H 2 O) 4 ]·2H 2 O + OH − − e − → [Ni 3 O(OH)(C 8 H 4 O 4 ) 2 ·(H 2 O) 4 ]·2H 2 O + H 2 O), 23,31 while in 1.0 mol L −1 KOH with 0.33 mol L −1 urea, the current density rapidly increased from 1.368 V, suggesting that urea was oxidized at this potential. The initial potential of the UOR was almost equal to the formation potential of Ni 3+ species, which proved that Ni 3+ species were the active centers of the UOR.…”

Water-Stable Pillared Three-Dimensional Zn–V Bimetal–Organic Framework for Promoted Electrocatalytic Urea Oxidation

“…50 The electronic properties of the active centers can be tuned by coordination of unsaturated metal atoms and ligands obtained by defect engineering and the bimetallic coupling effect after the second metal incorporation which can improve the catalytic performance of MOFs. 51 colleagues reported the successful synthesis of a series of Fe-/ Ni-based bi-and trimetallic MOFs through the hydrothermal method. The fabricated MOFs were directly utilized as catalysts in the electrocatalysis of oxygen evolution reaction.…”

Metal‐Organic Frameworks (MOFs) and Their Derivatives for Electrocatalytic Carbon Dioxide (CO2) Reduction to Value‐added Chemicals: Recent Advances and New Challenges

“…For example, it is also possible to synthesize MOFs with bimetallic active sites by manipulating the metal nodes, which can contribute significantly to electron transport and electron distribution and help enhance electrical conductivity and stability. [14][15] It is worth mentioning that MOFs materials also have favorable compatibility with additional materials. They can be combined with functional materials, such as carbon, polymers, metal nanoparticles and polyoxometalates (POMs), to build MOFs composites.…”

“…In addition, MOF materials also feature tunable metal nodes. For example, it is also possible to synthesize MOFs with bimetallic active sites by manipulating the metal nodes, which can contribute significantly to electron transport and electron distribution and help enhance electrical conductivity and stability [14–15] . It is worth mentioning that MOFs materials also have favorable compatibility with additional materials.…”