期刊
LANGMUIR
卷 37, 期 44, 页码 12981-12989出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.1c02046
关键词
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资金
- Major R&D plan of Zhejiang Natural Science Foundation [LD18E020001]
- Key program of National Natural Science and Foundation of china [51632008]
- National Natural Science Foundation of China [21875212]
- Fundamental Research Funds for the Central Universities [2021FZZX002-14]
This study developed a superhydrophilic thin-layer membrane with high separation performance and anti-fouling properties, which can effectively separate oil-in-water nanoemulsions. The membrane demonstrated great potential for point-of-use water treatment devices with the ability to enhance permeance under visible light.
Separation and purification of surfactant-stabilized oil-in-water nanoemulsions is a great environmental challenge. Membrane-based separation strategies are more effective over conventional methods in the treatment of nanoemulsion waste water. In this paper, we construct a superhydrophilic membrane by coating a thin photothermal-responsive iron tetrakis(4-carboxyphenyl)porphyrin (Fe-TCPP) nanofibrous metal organic framework (MOF) selective layer on a macroporous polyethersulfone membrane. The as-prepared membrane exhibits high separation performance of oil-in-water nanoemulsions with permeance of 46.4 L.m(-2).h(-1).bar(-1) and separation efficiency of 99%. It also demonstrates nice anti-oil/ionic-fouling property, good recyclability, and desirable stability. The high separation performance is accredited to the superhydrophilicity, highly charged surface, and nanometer pore sizes of the Fe-TCPP nanofibrous membrane. Due to the unique photothermal property of Fe-TCPP nanofibers, the permeance can be enhanced more than 50% by visible light without deteriorating the rejection. This photo-stimuli MOF-based thin-layer membrane offers great potential for the generation of point-of-use water treatment devices.
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