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Issue 10, 2019
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Templated growth of vertically aligned 2D metal–organic framework nanosheets

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Abstract

The investigation of crystalline and amorphous metal–organic frameworks (MOFs) for gas capture & storage, catalysis, membrane separation, sensing, bio-entity protection and drug delivery is now widespread. The fabrication of two-dimensional MOFs, or metal–organic networks, is of particular interest, due to the greater accessibility of active sites in sub nanometer-thickness sheets, compared to 3D frameworks. However, the in situ assembly of 2D MOF nanosheets into practical devices, especially with controllable crystal orientations, remains challenging. This work demonstrates the use of a bottom-up templated growth technique to prepare a continuous, 2D MOF nanosheet coating layer, arranged with a vertical structural alignment. The deposition template consists of a layer of horizontally aligned 1D halloysite nanotubes, which act as nucleation sites for the 2D MOF and subsequently guide their vertical growth. Differential alignments of the 2D MOF layer result in the ability to tune the transfer behavior of different molecules, toward better device gas permeance and selectivity simultaneously.

Graphical abstract: Templated growth of vertically aligned 2D metal–organic framework nanosheets

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Supplementary files

Article information


Submitted
26 Jul 2018
Accepted
14 Feb 2019
First published
15 Feb 2019

J. Mater. Chem. A, 2019,7, 5811-5818
Article type
Paper

Templated growth of vertically aligned 2D metal–organic framework nanosheets

H. Li, J. Hou, T. D. Bennett, J. Liu and Y. Zhang, J. Mater. Chem. A, 2019, 7, 5811
DOI: 10.1039/C8TA07234E

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