Department of Chemistry, School of Science , Beijing Jiaotong University , 100044 Beijing , China.
State Key Laboratory of Solid Wastes Resource Utilization and Energy Saving Building Materials , Beijing Building Materials Academy of Science Research , 100041 Beijing , China.
ACS Appl Mater Interfaces. 2019 Oct 16;11(41):38016-38022. doi: 10.1021/acsami.9b09311. Epub 2019 Oct 4.
Controllable well-defined metal-organic frameworks (MOFs) spherical structures are expected to be potential good platforms for the heterogeneous catalysis, guest storage, and drug delivery. However, the synthesis faces a challenge. In this paper, a series of well-defined MOFs spherical structures including core-shell, yolk-shell, and hollow spheres were successfully constructed with colloidal carbon as template. Meanwhile, the shapes of MOFs unit (bricklike or octahedral) and sizes of the formed internal space can be controlled simultaneously by rationally changing the modulator and removing template in a good manner. The as-prepared structures could not only keep intact crystal textures but also be used as advanced nanoreactors for enhancing raw materials conversion in the heterogeneous reaction of synthesizing benzoin ethyl ether. Particularly, by our internal-space-controllable nanoreactors, for the first time, the quantifiable relation between nanoreactors' internal space sizes and raw material conversion was revealed.
可控的、具有明确结构的金属-有机骨架（MOFs）的球形结构有望成为异相催化、客体存储和药物输送的潜在良好平台。然而，其合成面临挑战。在本文中，我们成功地以胶体碳为模板，构建了一系列具有明确结构的 MOFs 球形结构，包括核壳、蛋黄壳和空心球。同时，通过合理改变调节剂并以良好的方式去除模板，可以同时控制 MOFs 单元（砖形或八面体）的形状和形成的内部空间的尺寸。所制备的结构不仅可以保持完整的晶体结构，而且可以作为先进的纳米反应器，用于提高苯偶姻乙醚的异相反应中原料的转化率。特别是，通过我们的内部空间可控纳米反应器，首次揭示了纳米反应器内部空间尺寸与原料转化率之间的定量关系。
