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Download fileAchieving Effective Oil/Water Separation with Bicomponent Supramolecular Hydrogel Paint Coated Metal Mesh
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posted on 19.10.2020, 16:30 authored by Ya Liu, Li Wang, Hongsheng Lu, Zhiyu HuangThe
increasing discharge of oily wastewater and frequent oil spill
accidents pose a great threat to our environment and cause a great
waste of valuable resources. However, most existing methods to separate
oily water often involve unique equipment and toxic chemicals that
hinder their commercial applications. Inspired by the synergy of various
additives in commercial paint, we proposed a strategy to fabricate
a metal mesh for oil–water separation by using a bicomponent
hydrogel paint. This paint consists of an undercoat and a topcoat.
Owing to the exceptional adhesion and molecular recognition effect,
the paint can show a high binding degree. In addition, the hydrogel
paint can decouple polymerization from crosslinking due to the reversible
hydrogen bond crosslinking of topcoat, resulting in a separation of
labor between paint makers and paint users. The rough as-prepared
metal mesh with hydrophilic hydrogel and micropapillaes result in
an excellent underwater superhydrophobicity and low oil-adhesion characteristics.
This mesh can display high stability and durability under various
complex conditions and successfully remove water from various oil/water
mixtures and exhibit a high separation efficiency (above 99%). We
believe that even ordinary people without professional training can
also prepare an efficient oil/water separation mesh easily through
brushing the bicomponent hydrogel paint. Consequently, the bicomponent
hydrogel paint could be an attractive commercial paint to fabricate
oil/water separation mesh.
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decouple polymerizationbicomponent hydrogel paintoil-adhesion characteristicshydrogel paintmetal meshpaint usersBicomponent Supramolecular Hydrogel...binding degreemicropapillaes resultas-prepared metal meshseparation efficiencyrecognition effecthydrogen bond crosslinkingpaint makersoil spill accidents