Asymmetric Aerogel Membranes with Ultrafast Water Permeation for the Separation of Oil-in-Water Emulsion

ACS Applied Materials & Interfaces
Yanan LiuZhongyi Jiang

Abstract

Owing to highly porous and low density attributes, aerogels have been actively utilized in catalysis and adsorption processes, but their great potential in filtration requires exploitation. In this study, an asymmetric aerogel membrane is fabricated via one-pot hydrothermal reaction-induced self-cross-linking of poly(vinyl alcohol) (PVA), which exhibits ultrafast permeation for the separation of oil-in-water emulsion. Meanwhile, carbon nanotubes are added to improve the mechanical strength of the aerogel membranes. The self-cross-linking of PVA forms the supporting layer, and the exchange of water and vapor at the interface of PVA solution and air generates the separating layer as well as abundant hydroxyl groups on the membrane surface. The density, porosity, pore size, and wettability of the aerogel membrane can be tuned by the PVA concentration. Owing to high porosity (>95%) and suitable pore size (<85 nm), the aerogel membrane exhibits high rejection (99.0%) for surfactant-stabilized oil-in-water emulsion with an ultrahigh permeation flux of 135.5 × 103 L m-2 h-1 bar-1 under gravity-driven flow, which is 2 orders of magnitude higher than commercial filtration membranes with similar rejection. Meanwhile, the aerogel membrane...Continue Reading

References

Jul 18, 2002·Chemical Communications : Chem Comm·T MartinG Vigier
Nov 14, 2002·Chemical Reviews·Alain C Pierre, Gérard M Pajonk
May 20, 2006·Science·Jason K HoltOlgica Bakajin
Nov 6, 2007·Nature Materials·Klaus-Viktor PeinemannPeter F W Simon
Mar 21, 2008·Nature·Mark A ShannonAnne M Mayes
Jun 13, 2012·Advanced Materials·Gibum KwonAnish Tuteja
Aug 30, 2012·Nature Communications·Arun K KotaAnish Tuteja
Apr 19, 2013·ACS Applied Materials & Interfaces·Yingze CaoYen Wei
Aug 29, 2014·ACS Applied Materials & Interfaces·Hong-Bing ChenDavid A Schiraldi
May 15, 2015·Nature Communications·Byeongho LeeYong Hyup Kim
Oct 21, 2015·ACS Applied Materials & Interfaces·Jai Prakash ChaudharyRamavatar Meena
Mar 16, 2016·ACS Applied Materials & Interfaces·Xueting ZhaoZhongyi Jiang
Jul 1, 2016·Angewandte Chemie·Hao-Cheng YangZhi-Kang Xu

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Citations

Sep 3, 2019·Small·Jing YangWei Liu
Apr 24, 2019·Polymers·Elizabeth BarriosLei Zhai
Dec 9, 2020·Entropy·Sergey Y MisyuraSergey S Skiba
Aug 6, 2019·ACS Applied Materials & Interfaces·Ping Li, Qingchun Ge
Feb 28, 2019·ACS Applied Materials & Interfaces·Chaolang ChenJiadao Wang
Sep 12, 2020·ACS Applied Materials & Interfaces·Sudong YangPeng Zhao

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