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In Situ Synthesis of Ultrathin Metal-Organic Framework Nanosheets: A New Method for 2D Metal-Based Nanoporous Carbon Electrocatalysts

Abstract

Two-dimensional (2D) metal-organic frameworks (MOFs) nanosheets, possess the advantage of both 2D layered nanomaterials and MOFs, are considered as promising nanomaterials. However, it is still difficult to directly synthesize MOFs nanosheets. Here we for the first time report a new bottom-up strategy for in situ synthesis of high-quality ZIF-67 nanosheets with the salt-template assistance. The as-prepared ZIF-67 nanosheets exhibit uniform morphology and ultrathin structure with the thickness of 4.5 nm. Furthermore, because of the highly open structure, larger surface area, more accessible active sites and smaller diffusion barrier compared with bulk-sized MOFs, the directly carbonized Co, N-doped nanoporous carbon nanosheets also show greatly boosting oxygen reduction reaction (ORR). More importantly, the general synthetic process indicates that this effective salt-template confined bottom-up strategy can be expanded to synthesize other ultrathin 2D MOFs nanosheets with extensive applications in gas separation, catalysis, sensors, and energy storage and conversion.

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Publication details

The article was received on 05 Jul 2017, accepted on 31 Jul 2017 and first published on 01 Aug 2017


Article type: Paper
DOI: 10.1039/C7TA05821G
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    In Situ Synthesis of Ultrathin Metal-Organic Framework Nanosheets: A New Method for 2D Metal-Based Nanoporous Carbon Electrocatalysts

    L. Huang, X. Zhang, Y. Han, Q. Wang, Y. Fang and S. Dong, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA05821G

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