MOFs coupled transition metals, graphene, and MXenes: Emerging electrocatalysts for hydrogen evolution reaction

Development of effective transition metal catalyst to alternate precious metal platinum (Pt) based catalyst for hydrogen evolution reaction (HER) has attracted wide interest recently. HER through electrochemical water splitting (EWS) is a green pathway to generate hydrogen (H2) fuel without any carbon dioxide (CO2) emission. However, this technology has been restricted dependency on Pt-based catalyst to achieve optimum performance. At present, Pt based catalyst serves as a benchmark material in electrochemical H2 production. Extensive studies have been conducted on new type of porous materials metal-organic frameworks (MOFs) due to the Pt-based catalysts scarcity and cost. In this review, we have discussed the latest advancements of MOFs, which encompass transition metals (TMs), graphene, and MXenes. MOF-based electrocatalysts synthesis methods and electrochemical characteristics are also briefly summarized. Scientists can embark on further exploration of the capabilities offered by MOF-based catalysts by expanding the progress achieved and acknowledging the hurdles that remain. Consequently, their efforts can significantly contribute to the advancement of next-generation technologies for energy storage and conversion.