Issue 6, 2020

Exfoliation of metal–organic frameworks into efficient single-layer metal–organic nanosheet electrocatalysts by the synergistic action of host–guest interactions and sonication

Abstract

Single-layer two-dimensional metal–organic framework (MOF) nanosheets combine the characteristic of highly ordered structures of MOFs and unique physical and chemical properties of two-dimensional (2D) materials, which is beneficial for developing high-performance electrocatalysts and studying the structure–property relationships. However, the instability of coordination bonds during exfoliation results in great difficulties in their preparation and characterization. This work takes advantage of the anisotropy of coordination bonds in three-dimensional (3D) pillared-layer MOFs and selectively breaks the interlayer bonding through substitution of the pillared ligands by capping solvent molecules synergized with sonication in a solvent over a relatively short time course (30 min), thus leading to single-layer metal–organic nanosheets, which retain the 2D layered structure of the original crystalline counterpart. The as-synthesized single-layer metal–organic nanosheets are efficient electrocatalysts for the oxygen evolution reaction (OER) with a turnover frequency as high as 0.144 s−1 and 0.294 s−1 at overpotentials of 400 mV and 500 mV in neutral electrolyte media, respectively, which are higher than other heterogeneous catalysts.

Graphical abstract: Exfoliation of metal–organic frameworks into efficient single-layer metal–organic nanosheet electrocatalysts by the synergistic action of host–guest interactions and sonication

Supplementary files

Article information

Article type
Communication
Submitted
15 Nov. 2019
Accepted
20 Janv. 2020
First published
20 Janv. 2020

Nanoscale, 2020,12, 3623-3629

Exfoliation of metal–organic frameworks into efficient single-layer metal–organic nanosheet electrocatalysts by the synergistic action of host–guest interactions and sonication

W. Pang, B. Shao, X. Tan, C. Tang, Z. Zhang and J. Huang, Nanoscale, 2020, 12, 3623 DOI: 10.1039/C9NR09742B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements