Issue 2, 2023

MOF-on-MOF heterostructures with core–shell and core–satellite structures via controllable nucleation of guest MOFs

Abstract

The integration of two or more different types of metal–organic frameworks (MOFs) into hybrid MOF-on-MOF heterostructures has been widely studied, and the diversity of MOF-on-MOF heterostructures can be effectively increased by exploring the integration strategy of different MOF building blocks. Here, we report the structure regulation of MOF-on-MOF hybrids via controlling the heterogeneous nucleation and homogeneous nucleation growth of guest MOFs. By using ZIF-90 as the host and ZIF-8 as the guest, binary ZIF-90@ZIF-8 complexes can be synthesized. Moreover, the nucleation mode of ZIF-8 depends on the addition sequence of metal ions and ligands of the guest MOF, including heterogeneous nucleation and homogeneous nucleation. Therefore, ZIF-90@ZIF-8 hybrids with a core–shell structure and smooth surface or a core–satellite structure and rough surface are successfully prepared, increasing the structural diversity of MOF-on-MOF materials.

Graphical abstract: MOF-on-MOF heterostructures with core–shell and core–satellite structures via controllable nucleation of guest MOFs

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2022
Accepted
25 Nov 2022
First published
25 Nov 2022

CrystEngComm, 2023,25, 284-289

MOF-on-MOF heterostructures with core–shell and core–satellite structures via controllable nucleation of guest MOFs

S. Li, L. Zhao, Y. Yao, Z. Gu, C. Liu, W. Hu, Y. Zhang, Q. Zhao and C. Yu, CrystEngComm, 2023, 25, 284 DOI: 10.1039/D2CE01272C

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