Through partial deligandation of metal-organic frameworks (MOFs), quasi-MOFs with a transition structure between MOFs and metal compounds (such as metal oxides, nitrides, sulfides, and phosphides) can be fabricated. Quasi-MOFs can not only retain the porous structure of MOFs to a certain extent, but also expose the inorganic nodes to the guest species (e.g., metal nanoparticles) to show enhanced metal-support interaction for synergistic catalysis. This concept was first demonstrated by our group through calcining Au/MIL-101 at different temperatures under Ar flow to adjust the interface between Au nanoparticles and the inorganic Cr-O nodes. The obtained Au/quasi-MIL-101 showed superior enhanced catalytic activity in the oxidation of carbon monoxide. This study has inspired further research interest to fabricate other quasi-MOFs through controlled deligandation of mono- and bimetallic MOFs and their composites for the design of efficient catalysts.

通过金属有机骨架（MOF）的部分脱配，可以制造在MOF和金属化合物（例如金属氧化物，氮化物，硫化物和磷化物）之间具有过渡结构的准MOF。准MOF不仅可以在一定程度上保留MOF的多孔结构，而且还可以将无机节点暴露于客体（例如金属纳米颗粒），从而显示出增强的金属-载体相互作用以进行协同催化。该概念首先由我们的小组通过在Ar气流下在不同温度下煅烧Au / MIL-101来调节Au纳米颗粒与无机Cr-O节点之间的界面来证明。所获得的Au /准MIL-101在一氧化碳的氧化中显示出优异的增强的催化活性。