Epitaxial growth of metal-organic framework nanosheets into single-crystalline orthogonal arrays

Yingying Zou, Chao Liu (), Chaoqi Zhang, Ling Yuan, Jiaxin Li, Tong Bao, Guangfeng Wei (), Jin Zou () and Chengzhong Yu ()
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Yingying Zou: East China Normal University
Chao Liu: East China Normal University
Chaoqi Zhang: East China Normal University
Ling Yuan: East China Normal University
Jiaxin Li: East China Normal University
Tong Bao: East China Normal University
Guangfeng Wei: Tongji University
Jin Zou: The University of Queensland
Chengzhong Yu: East China Normal University

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Construction of two-dimensional nanosheets into three-dimensional regular structures facilitates the mass transfer and exploits the maximum potential of two-dimensional building blocks in applications such as catalysis. Here, we report the synthesis of metal-organic frameworks with an orthogonal nanosheet array. The assembly involves the epitaxial growth of single crystalline metal-organic framework nanosheets with a naturally non-preferred facet exposure as the shell on a cubic metal-organic framework as the core. The nanosheets, despite of two typical shapes and crystallographic orientations, also form a single crystalline orthogonally arrayed framework. The density and size of nanosheets in the core-shell-structured composite metal-organic frameworks can be well adjusted. Moreover, metal-organic frameworks with a single composition and hollow orthogonal nanosheet array morphology can be obtained. Benefiting from the unusual facet exposure and macroporous structure, the designed structure exhibits improved electrocatalytic oxygen evolution activity compared to conventional nanosheets.

Date: 2023
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DOI: 10.1038/s41467-023-41517-x

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