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Related Concept Videos

Colloids03:22

Colloids

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
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Macrocycle Self-Assembly Hydrogel for High-Efficient Oil-Water Separation.

Sheng-Hua Li1, Bin-Bin Li1, Xue-Lin Zhao1

  • 1Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China.

Small (Weinheim an Der Bergstrasse, Germany)
|June 5, 2023
PubMed
Summary

Researchers developed a novel lantern[33]arene-based hydrogel with exceptional gelation ability. This advanced supramolecular hydrogel demonstrates high efficiency in oil-water separation applications.

Keywords:
hydrogellanternarenemacrocycle self-assemblyoil-water separation

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Area of Science:

  • Supramolecular chemistry
  • Materials science
  • Nanotechnology

Background:

  • Macrocycle-based supramolecular hydrogels are widely studied.
  • Developing hydrogels from solitary macrocycles with high gelation capability remains a challenge.

Purpose of the Study:

  • To construct a novel lantern[33]arene-based hydrogel with super gelation capability.
  • To explore its application in efficient oil-water separation.

Main Methods:

  • Self-assembly of lantern[33]arenes into hydrogen-bonded organic nanoribbons.
  • Formation of entangled fibers leading to hydrogelation.
  • In situ sol-gel transformation for coating stainless-steel mesh.

Main Results:

  • Achieved a low critical gelation concentration (0.05 wt%) for the lantern[33]arene hydrogel.
  • Demonstrated reversible pH-responsiveness of the hydrogel.
  • Developed a coated mesh exhibiting >99% oil-water separation efficiency and high flux (>6 × 104 L m-2 h-1).

Conclusions:

  • The study presents a new macrocycle-based hydrogel with superior gelation properties.
  • The findings contribute to understanding supramolecular hydrogelation mechanisms.
  • The hydrogel shows promise as a functional interfacial material for oil-water separation.