Advanced porous hybrid materials possessing synergistic properties have been widely explored for different applications. In this work, we report a facile strategy for the fabrication of a sandwiched heterogeneous catalytic platform (Pd/UiO-66-NH₂@COF) by taking advantage of unique properties of metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs). The platform is constructed using catalytically active palladium nanoparticles supported by a UiO-66-NH₂ MOF core, followed by the coverage of COFs as the outer shell. The resultant Pd/UiO-66-NH₂@COF exhibits excellent catalytic activity and substrate-size-selective performance for the hydrogenation of olefins. This investigation sheds light on the construction of sandwich-structured nanocomposites for addressing challenging size-selective catalytic processes.

具有协同性能的高级多孔杂化材料已针对不同的应用进行了广泛的探索。在这项工作中，我们报告了一种利用金属有机骨架（MOF）和共价有机骨架的独特特性制造夹心多相催化平台（Pd / UiO-66-NH ₂ @COF）的简便策略。COFs）。该平台是使用具有催化活性的钯纳米颗粒（由UiO-66-NH ₂ MOF核支撑）构建的，然后覆盖COF作为外壳。生成的Pd / UiO-66-NH ₂对于烯烃的氢化，@ COF表现出优异的催化活性和底物尺寸选择性能。这项研究为解决具有挑战性的尺寸选择催化过程的夹心结构纳米复合材料的构造提供了启示。