生物污染
膜
材料科学
化学工程
乳状液
纳米颗粒
结垢
肺表面活性物质
纳米技术
化学
生物化学
工程类
作者
Yuyue Mo,Feng Zhang,Hefeng Dong,Xingzhen Zhang,Shoujian Gao,Shenxiang Zhang,Jian Jin
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-12-07
卷期号:16 (12): 20786-20795
被引量:58
标识
DOI:10.1021/acsnano.2c07977
摘要
Membrane fouling is a persistent and crippling challenge for oily wastewater treatment due to the high susceptibility of membranes to contamination. A feasible strategy is to design a robust and stable hydration layer on the membrane surface to prevent contaminates. A hydrogel illustrates a distinct category of materials with outstanding antifouling performance but is limited by its weak mechanical property. In this research, we report a reinforced hydrogel on a membrane by in situ growing ultrasmall hydrophilic Cu3(PO4)2 nanoparticles in a copper alginate (CuAlg) layer via metal-ion-coordination-mediated mineralization. The embeddedness of hydrophilic Cu3(PO4)2 nanoparticle with a size of 3–5 nm endows the CuAlg/Cu3(PO4)2 composite hydrogel with enhanced mechanical property as well as reinforced hydrate ability. The as-prepared CuAlg/Cu3(PO4)2 modified membrane exhibits a superior oil-repulsive property and achieves a nearly zero flux decline for separating surfactant stabilized oil-in-water emulsions with a high permeate flux up to ∼1330 L m–2 h–1 bar–1. Notably, it is capable of keeping similar permeate flux for both pure water and oil-in-water emulsions during filtration, which is superior to the currently reported membranes, indicating its super-antifouling properties.
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