Exploring the Synergistic Effect of Novel Ni‐Fe in 2D Bimetallic Metal‐Organic Frameworks for Enhanced Electrochemical Reduction of CO₂

Abstract

The two‐dimensional (2D) metal‐organic frameworks (MOFs) have capabilities to reduce CO2 with high Faradaic efficiency (FE). Herein, the role of incorporating bimetallic Ni and Fe into newly constructed MOFs is studied. This work highlights the use of bimetallic synergistic effect with surrounded nitrogen atoms, opening new avenues for efficient electrocatalytic reduction of CO2. This MOF Ni‐Fe contains moieties surrounded by four nitrogen atoms via covalent bonding, which resembles the porphyrin‐based molecular units as selective and effective homogeneous CO2 reduction electrocatalysts. Besides, density functional theory (DFT) also helps to figure out that the incorporation combination of metals helps achieve the high FE of 98.2% with stability up to 30 h under a low applied potential of −0.5 V versus reversible hydrogen electrode (RHE). These results offer a promising avenue to develop and optimize the MOFs‐based electrocatalysts for electrochemical conversion of CO2.

MOF-derived transition metal-based catalysts for the electrochemical reduction of CO2to CO: a mini review

“…137 The activity of bimetallic MOF derivatives for the CO 2 RR was proved by incorporating Ni and Fe into newly constructed MOFs. 138 The as-fabricated MOF-derived Ni-Fe exhibited moieties surrounded by four N atoms, which functioned like porphyrin-based molecular to catalyse the CO 2 RR. The combination of two metals was believed to synergistically enlarge the active surface area, expose more active sites to adsorb the intermediate, and lower the kinetic energy barrier.…”

Potential Applications of Nickel‐Based Metal‐Organic Frameworks and their Derivatives

“…Using redox‐active nickel dithiolene‐based MOF catalysts for CO 2 electroreduction presents an essential technique for building stable and effective crystalline enzyme‐like catalysts to convert CO 2 into high‐value chemical stocks. Recently, Iqbal et al [88] . have investigated the synergistic effect of Ni−Fe−MOF for ECO 2 RR.…”

“…Using redox-active nickel dithiolene-based MOF catalysts for CO 2 electroreduction presents an essential technique for building stable and effective crystalline enzyme-like catalysts to convert CO 2 into high-value chemical stocks. Recently, Iqbal et al [88] have investigated the synergistic effect of NiÀ FeÀ MOF for ECO 2 RR. This NiÀ FeÀ MOF has moieties covalently bound to four nitrogen atoms, like porphyrin-based molecular units as selective and effective homogeneous CO 2 reduction electrocatalysts.…”

Low-temperature direct electrochemical splitting of H2S

“…Current environmental conditions call for the development of ecological energy sources (Sekimoto et al, 2015;Raziq et al, 2022a;Ali et al, 2022b;Raziq et al, 2022b;Ali et al, 2022c;Ali et al, 2022d;Iqbal et al, 2022;Wahid et al, 2023). Among the candidates, H 2 is one of the most attractive alternatives to fossil fuels.…”