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Issue 4, 2018
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Underoil superhydrophilic surfaces: water adsorption in metal–organic frameworks

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Abstract

Highly hydrophilic surfaces in oil are usually difficult to prepare due to the high surface tension of water. In nature, sarcocarps such as Chinese yam can reserve water to keep itself fresh. Inspired by the unique wetting properties of sarcocarps, metal–organic frameworks (MOFs) that can capture moisture from the atmosphere spontaneously have been proposed as building blocks for construction of underoil superhydrophilic surfaces. Herein, a mussel-inspired preparation method was adopted to coat HKUST-1 tightly on stainless-steel meshes. The MOF-based surfaces showed remarkable self-cleaning properties to crude oil under water, and could realize high-efficiency, on-demand separation of oil-in-water and water-in-oil emulsions via selective water filtration and adsorption, respectively. Water adsorption in MOFs could be extended to other extreme wettability and interfacial issues.

Graphical abstract: Underoil superhydrophilic surfaces: water adsorption in metal–organic frameworks

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Publication details

The article was received on 04 Nov 2017, accepted on 20 Dec 2017 and first published on 21 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA09711E
Citation: J. Mater. Chem. A, 2018,6, 1692-1699
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    Underoil superhydrophilic surfaces: water adsorption in metal–organic frameworks

    M. Liu, L. Tie, J. Li, Y. Hou and Z. Guo, J. Mater. Chem. A, 2018, 6, 1692
    DOI: 10.1039/C7TA09711E

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