A facile dual-template-directed successive assembly approach to hollow multi-shell mesoporous metal–organic framework particles

Haidong Xu, Ji Han, Bin Zhao, Ruigang Sun, Guiyuan Zhong, Guangrui Chen, Yusuke Yamauchi and Buyuan Guan ()
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Haidong Xu: College of Chemistry, Jilin University
Ji Han: College of Chemistry, Jilin University
Bin Zhao: College of Chemistry, Jilin University
Ruigang Sun: College of Chemistry, Jilin University
Guiyuan Zhong: College of Chemistry, Jilin University
Guangrui Chen: College of Chemistry, Jilin University
Yusuke Yamauchi: The University of Queensland
Buyuan Guan: College of Chemistry, Jilin University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Hollow multi-shell mesoporous metal–organic framework (MOF) particles with accessible compartmentalization environments, plentiful heterogeneous interfaces, and abundant framework diversity are expected to hold great potential for catalysis, energy conversion, and biotechnology. However, their synthetic methodology has not yet been established. In this work, a facile dual-template-directed successive assembly approach has been developed for the preparation of monodisperse hollow multi-shell mesoporous MOF (UiO-66-NH2) particles through one-step selective etching of successively grown multi-layer MOFs with alternating two types of mesostructured layers. This strategy enables the preparation of hollow multi-shell mesoporous UiO-66-NH2 nanostructures with controllable shell numbers, accessible mesochannels, large pore volume, tunable shell thickness and chamber sizes. The methodology relies on creating multiple alternating layers of two different mesostructured MOFs via dual-template-directed successive assembly and their difference in framework stability upon chemical etching. Benefiting from the highly accessible Lewis acidic sites and the accumulation of reactants within the multi-compartment architecture, the resultant hollow multi-shell mesoporous UiO-66-NH2 particles exhibit enhanced catalytic activity for CO2 cycloaddition reaction. The dual-template-directed successive assembly strategy paves the way toward the rational construction of elaborate hierarchical MOF nanoarchitectures with specific physical and chemical features for different applications.

Date: 2023
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DOI: 10.1038/s41467-023-43259-2

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