Recent progress of MOF/MXene-based composites: Synthesis, functionality and application

MOFs are constructed by self-assembly of metal ions/clusters and organic linkers. They have received much attention owing to the benefits of well-exposed active sites, ultrahigh porosity, and abundant pore structures. However, some traditional MOFs suffer from poor conductivity and stability. MXenes with high electrical conductivity and rich surface functional groups can be combined with MOFs to solve the problem. In this review, the synthesis strategies of MOF/MXene-based composites are summarized, including MOF/MXene, MOF derivatives/MXene and MOF derivatives/MXene derivatives. The functionalities of MOF/MXene-based composites are also studied comprehensively. MXenes can not only enhance the stability and conductivity of single MOFs, but also bring many new functionalities, such as template effect. These advantages enable synthetic MOF/MXene-based composites to be applied in many fields, such as supercapacitors, batteries, electrocatalysts, photocatalysts, sensors, microwave adsorption. Furthermore, the influences of the structure on the properties for MOF/MXene-based composites are also discussed. Finally, the authors prospect the future opportunities and challenges of MOF/MXene-based composites.