基于MOF材料的涂层应用与机制研究进展

Research progress on coating application and mechanism based on MOF materials

金属有机骨架(MOF)作为一种新型多孔晶体材料,因其具有高孔隙率、结构多样、化学结构可控等特点可被作为纳米粒子和载体使用。基于MOF材料的涂层可兼具MOF本身的优点,但基于MOF材料的涂层应用和机制研究的综述性论文不多。本文针对基于MOF材料的涂层国内外研究现状进行了介绍,重点阐述了基于MOF材料的涂层防/除冰应用(超疏水表面和光滑液体注入多孔表面(SLIPS))、防腐应用(MOF材料作为纳米粒子和载体)和抗菌应用(基于金属离子释放、基于光动力(PDT)和基于光热(PTT)),并归纳出不同涂层的防/除冰机制(降低水的凝固温度和减少冰的黏附)、防腐机制(直接物理阻隔或生成化合物而达到阻隔效果)和抗菌机制(对真核细胞具有弱毒性的金属离子达到抗菌效果、活性氧(ROS)在光照射下激活达到抑菌效果和通过吸收外界光产生热量,随温度升高而达到抗菌效果)。并对基于MOF材料的涂层面临的关键挑战、潜在应用和发展前景进行了展望。

Metal-organic framework(MOF),as a new type of porous crystal material,can be used as nanoparticle and carrier because of its high porosity,diverse structure and controllable chemical structure.Functional coatings prepared based on MOF materials can combine the advantages of MOF and have a wide range of applications,but there are not many papers on the application and mechanism of coatings based on MOF materials.The research status of MOF-based coatings at home and abroad was introduced,focusing on the anti-icing/de-icing applications of MOF-based coatings(superhydrophobic surfaces and smooth liquid-injected porous surfaces(SLIPS)),anticorrosion applications(MOF materials as nanoparticles and carriers) and antibacterial applications(based on metal ion release,photodynamic therapy(PDT) and photothermal therapy(PTT)),and the anti-icing mechanisms of different coatings(reducing the solidification temperature of water and reducing ice adhesion) were summarized.Antiseptic mechanism(direct physical barrier or formation of compounds to achieve the barrier effect)and antibacterial mechanism(metal ions with weak toxicity to eukaryotic cells achieve antibacterial effect,reactive oxygen species(ROS) are activated under light irradiation to achieve antibacterial effect,and heat is generated by absorbing external light,and antibacterial effect is achieved with increasing temperature).The key challenges,potential applications and development prospects of MOF-based coatings are prospected.