A hydrophobic-superoleophilic 2D Zr-based alkyne-rich metal-organic framework for oil/water separation and solar-assisted oil evaporation
A 2D layered Zr-based metal-organic framework (MOF), Zr L1 , was assembled from Zr( iv ) ions and backfolded alkyne-rich dicarboxylate linker ( L1 2− ). Structurally robust and chemically stable Zr L1 was dip-coated on polyurethane (PU) to give a composite Zr L1 @PU, which exhibited significantly en...
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Published in | Journal of materials chemistry. A, Materials for energy and sustainability Vol. 11; no. 41; pp. 22223 - 22231 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
24.10.2023
|
Subjects | |
Online Access | Get full text |
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Summary: | A 2D layered Zr-based metal-organic framework (MOF), Zr
L1
, was assembled from Zr(
iv
) ions and backfolded alkyne-rich dicarboxylate linker (
L1
2−
). Structurally robust and chemically stable Zr
L1
was dip-coated on polyurethane (PU) to give a composite Zr
L1
@PU, which exhibited significantly enhanced oil/water separation performance (maximum absorption capacity: 66.19 g g
−1
, separation efficiency: 99.3%, selectivity: water totally excluded, and permeability: 5340 L m
−2
h
−1
) when compared with pristine PU. More importantly, Zr
L1
@PU maintained steady performance and framework stability even upon 20 cycles of operation. Given that Zr
L1
@PU is photothermally active, it was taken for solar-driven evaporation of the oil harvested during oil/water separation, and the evaporation efficiency of Zr
L1
@PU (complete evaporation within 25-40 minutes) outperforms that of pristine PU (30 wt% of the selected oil still remained within the same illumination period). This study represents an illustrative example giving insights into the rational design of hydrophobic/superoleophilic framework for fabricating efficient durable self-cleaning oil/water separator.
A hydrophobic/superoleophilic spongy composite based on alkyne-rich 2D Zr-MOF and polyurethane executes solar-assisted self-cleaning oil/water separation. |
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Bibliography: | Electronic supplementary information (ESI) available: General procedure, experimental details, additional PXRD patterns, FT-IR spectra, TG curves, UV-vis DRS spectra, gas sorption plots, photothermal conversion plots, solvent evaporation plots, SEM images and photographs of contact angles (PDF). See DOI https://doi.org/10.1039/d3ta05241a |
ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/d3ta05241a |