Aijaz Arshad, Xu Qiang
National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan.
J Phys Chem Lett. 2014 Apr 17;5(8):1400-11. doi: 10.1021/jz5004044. Epub 2014 Apr 2.
Metal-organic frameworks (MOFs) are highly ordered crystalline porous materials prepared by the self-assembly of metal ions and organic linkers having low-density framework structures of diversified topologies with tunable pore sizes and exceptionally large surface areas. Other than outstanding gas/molecule storage properties, loading of metal nanoparticles (MNPs) into the pores of MOFs could afford heterogeneous catalysts having advantages of controlling the particle growth to a nanosize region, resulting in highly active sites and enhanced catalytic performances, and these entrapped MNPs within MOF pores could be accessed by reactants for chemical transformations. This is a rapidly developing research area, and this Perspective addresses current achievements and future challenges for diverse MOF-immobilized MNPs within their pores, focusing especially on their preparation, characterization, and application as heterogeneous catalysts.
金属有机框架材料（MOFs）是高度有序的晶体多孔材料，由金属离子和有机连接体自组装而成，具有低密度框架结构，拓扑结构多样，孔径可调，表面积极大。除了出色的气体/分子存储性能外，将金属纳米颗粒（MNPs）负载到MOF的孔中可得到多相催化剂，其优点是能将颗粒生长控制在纳米尺寸范围内，从而产生高活性位点并提高催化性能，并且MOF孔内截留的这些MNPs可被反应物用于化学转化。这是一个快速发展的研究领域，本综述探讨了MOF孔内各种固定化MNPs的当前成果和未来挑战，尤其关注它们作为多相催化剂的制备、表征及应用。
