Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and The Barcelona Institute of Science and Technology , Campus UAB , Bellaterra, Barcelona 08193 , Spain.
Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi , Girona E-17071 , Catalonia , Spain.
ACS Appl Mater Interfaces. 2018 Jul 18;10(28):23952-23960. doi: 10.1021/acsami.8b05098. Epub 2018 Jul 3.
Here, we report the synthesis of (multi)-layered zeolitic imidazolate framework (ZIF-8/-67) composite particles via a sequential deconstruction-reconstruction process. We show that this process can be applied to construct ZIF-8-on-ZIF-67 composite particles whose cores are the initially etched particles. In addition, we demonstrate that introduction of functional inorganic nanoparticles (INPs) onto the crystal surface of etched particles does not disrupt ZIF particle reconstruction, opening new avenues for designing (multi)-layered ZIF-on-INP-on-ZIF composite particles comprising more than one class of inorganic nanoparticles. In these latter composites, the location of the inorganic nanoparticles inside each single metal-organic framework particle as well as of their separation at the nanoscale (20 nm) is controlled. Preliminary results show that (multi)-layered ZIF-on-INP-on-ZIF composite particles comprising a good sequence of inorganic nanoparticles can potentially catalyze cascade reactions.
在这里，我们通过顺序的解构-重建过程报告了（多）层沸石咪唑酯骨架（ZIF-8/-67）复合颗粒的合成。我们表明，该过程可用于构建 ZIF-8 负载 ZIF-67 的复合颗粒，其核为最初刻蚀的颗粒。此外，我们证明，将功能无机纳米粒子（INP）引入刻蚀颗粒的晶体表面不会破坏 ZIF 颗粒的重建，为设计包含不止一类无机纳米粒子的（多）层 ZIF-INP-ZIF 复合颗粒开辟了新途径。在这些后者的复合材料中，每个单个金属-有机骨架颗粒内的无机纳米粒子的位置以及它们在纳米尺度（20nm）的分离是可控的。初步结果表明，包含良好序列的无机纳米粒子的（多）层 ZIF-INP-ZIF 复合颗粒有可能催化级联反应。
