Cover Image, Volume 6, Number 1, January 2024

Front cover image: Rising energy demands and fossil fuel depletion have triggered an environmental crisis. Promising solutions involve enhancing photocatalytic and electrocatalytic processes using renewable sources like wind and solar, but challenges remain in maximizing catalyst efficiency due to issues like aggregation and low metal loading densities. Single-atom catalysts (SACs) have gained substantial attention because of their maximum atom utilization and low aggregation during catalytic reactions. However, the high surface energy limits their synthesis, thus creating significant challenges for further development. MOFs are prime choices for SAC synthesis, offering customizable chemistry, tunable morphologies, high porosity, and chemical/thermal stability. In the article number CEY2382, Ahmed et al. systematically highlighted the recent progress and important developments that MOF-based SACs have brought to the field of photocatalytic and electrocatalytic energy-related applications. The author thoroughly discussed the synthetic protocols, advanced identification techniques of MOF-based SACs, and their application in energy generation and storage such as, HER, OER, O2/CO2/N2 reduction reactions, fuel cells, and rechargeable batteries. The authors also explored the future development of this exciting field, outlines the strengths and weaknesses of MOF-based SACs.