膜
化学工程
渗透
接触角
材料科学
超亲水性
乳状液
纳米颗粒
生物污染
傅里叶变换红外光谱
化学
纳米技术
复合材料
生物化学
工程类
作者
Feng Shijie,Zhao Jiefeng,Pengyu Zhang,Yanfang Gao,Junxian Yun
标识
DOI:10.1016/j.jece.2022.107407
摘要
Environmentally friendly separation materials are essential for separating emulsified oil-water mixtures. The nylon membrane has been facilely converted into highly hydrophilic and underwater superoleophobic via a simple one-step co-deposition of polydopamine and chitosan-tripolyphosphate (CS-TPP) nanoparticles, wherein the CS-TPP particles were prepared by the ion gel method. The modified membrane exhibited excellent antifouling performance with the underwater oil contact Angle (UOCA) at 179.6°. The prepared environmental [email protected]@nylon membrane was characterized by SEM, EDS, FTIR, and XPS. The membrane could separate various oil-in-water emulsions in a wide range of average particle sizes (50.9–1832.0 nm). In addition, the [email protected]@nylon membrane demonstrated high permeation flux (221.0–1770.5 L m−2 h−1) and good regeneration ability. The flux could still maintain more than 89% even after fifteen cycles. The degradable modification materials and simple preparation process would highlight the potential of modified membranes in large-scale production and green oily wastewater treatment.
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