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Issue 40, 2017
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Pickering emulsions stabilized by a metal–organic framework (MOF) and graphene oxide (GO) for producing MOF/GO composites

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Abstract

Herein we demonstrate the formation of a novel kind of Pickering emulsion that is stabilized by a Zr-based metal–organic framework (Zr-MOF) and graphene oxide (GO). It was found that the Zr-BDC-NO2 and GO solids assembling at the oil/water interface can effectively stabilize the oil droplets that are dispersed in the water phase. Such a Pickering emulsion offers a facile route for fabricating Zr-MOF/GO composite materials. After removing water and oil by freeze drying from Pickering emulsions, the Zr-MOF/GO composites were obtained and their morphologies, structures and interaction properties were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectrometry, respectively. The influences of the concentration of GO and Zr-MOF on the emulsion microstructures and the properties of the MOF/GO composites were studied. Based on experimental results, the mechanisms for the emulsion formation by Zr-MOF and GO and the as-synthesized superstructures of the Zr-MOF/GO composite were proposed. It is expected that this facile and tunable route can be applied to the synthesis of different kinds of MOF-based or GO-based composite materials.

Graphical abstract: Pickering emulsions stabilized by a metal–organic framework (MOF) and graphene oxide (GO) for producing MOF/GO composites

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Publication details

The article was received on 04 Aug 2017, accepted on 15 Sep 2017 and first published on 15 Sep 2017


Article type: Paper
DOI: 10.1039/C7SM01567D
Citation: Soft Matter, 2017,13, 7365-7370
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    Pickering emulsions stabilized by a metal–organic framework (MOF) and graphene oxide (GO) for producing MOF/GO composites

    F. Zhang, L. Liu, X. Tan, X. Sang, J. Zhang, C. Liu, B. Zhang, B. Han and G. Yang, Soft Matter, 2017, 13, 7365
    DOI: 10.1039/C7SM01567D

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