金属有机框架基复合材料的制备及其光热性能研究

Metal-organic frameworks (MOFs) are a growing class of organic-inorganic hybrid crystalline porous materials, showing high levels of structural and chemical diversity. They have a wide range of applications in gas adsorption and separation, catalysis, sensing, biomedicine and other fields. Due to their intriguing properties such as high porosity, adjustable pore size and tunable surface functionality, MOFs have been gaining popularity as a promising platform for integration of various organic/inorganic functional nanomaterials in a predictable and controllable way. The combination of MOFs and functional components offers a possibility to generate synergetic effect between functional units, thus leading to the creation of multifunctional materials with performance superior to each individual components. In this review, we summarized recent research progress on controllable synthesis of MOF composites. There are basically two strategies, including "bottle in ship" and "ship in bottle". Following that, preparation methods including solution infiltration, deposition, solid grinding and template synthesis, were discussed in detail. Light-to-heat conversion materials have always been a research focus due to their important applications in solar powered water evaporation and near-infrared (NIR) excited bioimaging and noninvasive cancer treatment. MOFs can not only show intrinsic structure-dependent photoresponse activity, but also serve as porous supports to facilitate the stabilization and spatial distribution of photothermal nanoparticles. Recently, MOF composites with photothermal effects have aroused increasing attention in the fields like tumor diagnosis and treatment, bacterial disinfection and synergistic catalysis. This review mainly focused on the recent research progress on photothermal MOF composites. We discussed the integration of functional MOFs with various inorganic/organic photothermal nanoparticles (e.g. Au, Pt, porphyrin, polydopamine etc.), along with the structure and photothermal application of the composites. Research about MOFs based light-to-heat conversion is at the stage of rapid development. Finally, we also give a prospect to the future development of multifunctional and photothermal MOF composites.