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Pickering emulsions stabilized by metal-organic framework (MOF) and graphene oxide (GO) for producing MOF/GO composites

Abstract

Herein we demonstrate the formation of a novel kind of Pickering emulsion that is stabilized by Zr-based metal-organic framework (Zr-MOF) and graphene oxide (GO). It was found that the Zr-BDC-NO2 and GO solids assembling at oil/water interface can well stabilize the oil droplets that are dispersed in 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 composite were obtained and their morphologies, structures and interaction properties were characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction and FT-IR spectra, respectively. The influences of the concentration of GO and Zr-MOF on the emulsion microstructures and the properties of MOF/GO composite were studied. Based on experimental results, the mechanisms for the emulsion formation by Zr-MOF and GO and the as-synthesized superstructures of 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.

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Supplementary files

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, Accepted Manuscript
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    Pickering emulsions stabilized by 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, Accepted Manuscript , DOI: 10.1039/C7SM01567D

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