A review of synthesis strategies for MOF-derived single atom catalysts

Single atom catalysts (SACs) have attracted great attention as promising catalysts that integrate the benefits of both heterogeneous and homogeneous catalysts. SACs exhibit unique properties that are otherwise difficult to achieve, such as high atom utilization efficiency, unprecedentedly high catalytic activity and selectivity. However, it still remains a great challenge to prepare stable SACs without particle aggregation and sintering. Among the various fabrication methods for SACs, metal-organic framework (MOF)-derived synthesis routes have shown great potential by taking advantage of MOFs' high structural/chemical tunability, large surface area and high porosity. In this review, the synthesis strategies for MOF-derived SACs are comprehensively summarized and classified into five classes, metal node modification, ligand modification, guest encapsulation, migration and trapping, and others. The current challenges and future opportunities of MOF-derived SACs are further discussed. This review will be useful for the rational design of MOF-derived SACs for various catalytic reactions.

Automated summary

Single atom catalysts (SACs) have emerged as a promising class of catalysts that combine the advantages of both heterogeneous and homogeneous catalysts, offering high atom utilization efficiency, unprecedentedly high catalytic activity and selectivity. Metal-organic framework (MOF)-derived synthesis routes, with their high structural/chemical tunability, large surface area and high porosity, have shown great potential for preparing stable SACs without particle aggregation and sintering. This review comprehensively summarizes the synthesis strategies for MOF-derived SACs, categorizing them into five classes and discussing the current challenges and future opportunities in this field.