Photocatalytic Nanofiltration Membranes with Self‐Cleaning Property for Wastewater Treatment
Yan Lv,Chao Zhang,Ai He,Shang-Jin Yang,Guang-Peng Wu,Seth B. Darling,Seth B. Darling,Zhi-Kang Xu +7 more
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TLDR
In this article, a photocatalytic nanofiltration membrane (NFM) with self-cleaning property fabricated using a facile biomimetic mineralization process is presented, where a polydopamine (PDA)/polyethyleneimine (PEI) intermediate layer is fabricated on an ultra-filtration membrane via a co-deposition method followed by mineralization of a β-FeOOH nanorods.Abstract:
Membrane fouling is one of the most severe problems restricting membrane separation technology for wastewater treatment. This work reports a photocatalytic nanofiltration membrane (NFM) with self-cleaning property fabricated using a facile biomimetic mineralization process. In this strategy, a polydopamine (PDA)/polyethyleneimine (PEI) intermediate layer is fabricated on an ultrafiltration membrane via a co-deposition method followed by mineralization of a photocatalytic layer consisting of β-FeOOH nanorods. The PDA–PEI layer acts both as a nanofiltration selective layer and an intermediate layer for anchoring the β-FeOOH nanorods via strong coordination complexes between Fe3+ and catechol groups. In visible light, the β-FeOOH layer exhibits efficient photocatalytic activity for degrading dyes through the photo-Fenton reaction in the presence of hydrogen peroxide, endowing the NFM concurrently with effective nanofiltration performance and self-cleaning capability. Moreover, the mineralized NFMs exhibit satisfactory stability under simultaneous filtration and photocatalysis processing, showing great potential in advanced wastewater treatment.read more
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References
More filters
Journal ArticleDOI
Mussel-Inspired Surface Chemistry for Multifunctional Coatings
TL;DR: Inspired by the composition of adhesive proteins in mussels, dopamine self-polymerization is used to form thin, surface-adherent polydopamine films onto a wide range of inorganic and organic materials, including noble metals, oxides, polymers, semiconductors, and ceramics.
Journal ArticleDOI
Science and technology for water purification in the coming decades
Mark A. Shannon,Paul W. Bohn,Paul W. Bohn,Menachem Elimelech,Menachem Elimelech,John G. Georgiadis,Benito J. Mariñas,Anne M. Mayes,Anne M. Mayes +8 more
TL;DR: Some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water are highlighted.
Journal ArticleDOI
Drawbacks of applying nanofiltration and how to avoid them: A review
TL;DR: In this article, the authors identify six challenges for nanofiltration where solutions are still scarce: avoiding membrane fouling, and possibilities to remediate, improving the separation between solutes that can be achieved, further treatment of concentrates, chemical resistance and limited lifetime of membranes, insufficient rejection of pollutants in water treatment, and the need for modelling and simulation tools.
Journal ArticleDOI
A comprehensive review of nanofiltration membranes:Treatment, pretreatment, modelling, and atomic force microscopy
TL;DR: A comprehensive review of NF in water treatments is presented in this paper, including a review of the applications of NF as well as in the pretreatment process for desalination; the mechanism and minimization of NF membrane fouling problems; and theories for modelling and transport of salt, charged and noncharged organic compounds in NF membranes.
Journal ArticleDOI
Bioinspired Polymerization of Dopamine to Generate Melanin-Like Nanoparticles Having an Excellent Free-Radical-Scavenging Property
TL;DR: The demonstrated ability of melanin-like nanoparticles to reduce 2,2-diphenyl-1-picrylhydrazyl (DPPH) suggests free radical scavenging activity of the material.