abstract
- Bimetallic and trimetallic metal-organic frameworks (MOF), as well as their MOF-derived metal-containing nanocarbons, are reviewed in respect of their applications in water splitting processes for hydrogen evolution reactions and oxygen evolution reactions. MOFs for these purposes are generally prepared via solvothermal processes and then subjected to pyrolysis yielding respective metalated nanocarbons. Trimetallic MOF compounds and their respective nanocarbons are shown to have better electrocatalytic activity in comparison with bimetallic ones and able to withstand a higher current density. The use of metallic or base substrates, such as metal foams, graphene, and doping in metal-organic structures, helps the electrocatalyst to get a better response. Several nanocarbon catalysts derived from trimetallic MOFs possess high potential values similar to those of the commercial Pt/C catalyst in oxygen reduction reaction. Relative characteristics of bi- and trimetallic MOFs and metalated nanocarbons (synthesis methods, properties, peculiarities, stability in aqueous/nonaqueous media) are briefly discussed. © 2024 Elsevier Inc. All rights are reserved.