Tuning the Wettability of Metal–Organic Frameworks via Defect Engineering for Efficient Oil/Water Separation
Author(s) -
Yi Huang,
Yang Jiao,
Ting Chen,
Yutao Gong,
Songcheng Wang,
Yang Liu,
David S. Sholl,
Krista S. Walton
Publication year - 2020
Publication title -
acs applied materials and interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.535
H-Index - 228
eISSN - 1944-8252
pISSN - 1944-8244
DOI - 10.1021/acsami.0c08803
Subject(s) - materials science , wetting , metal organic framework , nanotechnology , chemical engineering , metal , separation (statistics) , organic chemistry , composite material , metallurgy , adsorption , chemistry , engineering , machine learning , computer science
Zirconium-based metal-organic frameworks (MOFs) have attracted interest due to their chemical and thermal stabilities and structural tunability. In this work, we demonstrate the tuning of the wettability of a UiO-66 structure via defect-engineering for efficient oil/water separation. UiO-66 crystals with controlled levels of missing-linker defects were synthesized using a modulation approach. As a result, the hydrophilicity of the defect-engineered UiO-66 (d-UiO-66) can be varied. In addition, a thin layer of hydrophilic d-UiO-66 was successfully fabricated on a series of stainless steel meshes (d-UiO-66@mesh), which exhibited excellent superhydrophilic and underwater superoleophobic properties and displayed interesting separation performance for various oil/water mixtures.
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